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| -rw-r--r-- | floppy/doc/INTERRUP.B | 9839 |
diff --git a/floppy/doc/INTERRUP.B b/floppy/doc/INTERRUP.B new file mode 100644 index 0000000..a2a3f5a --- /dev/null +++ b/floppy/doc/INTERRUP.B @@ -0,0 +1,9839 @@ +Interrupt List, part 2 of 18
+Copyright (c) 1989-1999,2000 Ralf Brown
+--------V-10BF--CX0000-----------------------
+INT 10 - Athena Digital HGCIBM.COM - INSTALLATION CHECK
+ AH = BFh
+ CX = 0000h (???)
+Return: CX = 0202h
+ DL = ??? (internal data, possibly version number)
+--------b-10BF00-----------------------------
+INT 10 - VIDEO - Compaq Extensions - SELECT EXTERNAL MONITOR
+ AX = BF00h
+Return: nothing
+Desc: specify that the external monitor become the active monitor
+Note: all registers preserved and the internal monitor is blanked
+SeeAlso: AX=BF01h,AX=BF12h,AH=12h/BL=35h
+--------b-10BF01-----------------------------
+INT 10 - VIDEO - Compaq Extensions - SELECT INTERNAL MONITOR
+ AX = BF01h
+Return: nothing
+Desc: specify that the internal monitor become the active monitor
+Note: all registers preserved and the external monitor is blanked
+SeeAlso: AX=BF00h,AX=BF12h,AH=12h/BL=35h
+--------b-10BF02-----------------------------
+INT 10 - VIDEO - Compaq Extensions - SET MASTER MODE OF CURRENT CONTROLLER
+ AX = BF02h
+ BH = master mode
+ 04h CGA
+ 05h EGA
+ 07h MDA
+Return: nothing
+SeeAlso: AX=BF03h
+--------b-10BF03BX0000-----------------------
+INT 10 - VIDEO - Compaq Extensions - GET ENVIRONMENT
+ AX = BF03h
+ BX = 0000h
+Return: BH = active monitor
+ (00h = external, 01h = internal, 03h both, 04h neither)
+ BL = master mode (see #00211)
+ CH = ASIC type and version
+ 00h (reserved, very early Compaq VGCs)
+ 31h if QVision VGA
+ CL = switchable VDU modes supported (see #00212)
+ DH = internal monitor type (see #00213)
+ DL = external monitor type (see #00213)
+SeeAlso: AX=1A00h,AX=BF00h,AX=BF01h,AX=BF02h,AX=BF11h
+
+(Table 00211)
+Values for Compaq video master mode:
+ 00h switchable VDU not present
+ 04h CGA
+ 05h EGA
+ 07h MDA
+ 08h switchable LCD controller present
+ 09h plasma VGA
+ 0Ah TFT (active-matrix) VGA
+
+Bitfields for Compaq switchable VDU modes support:
+Bit(s) Description (Table 00212)
+ 0 CGA supported
+ 1,2 reserved (1)
+ 3 MDA supported
+ 4 BitBLT engine available
+ 5 132-column support availble
+ 6 640x480x256 mode available
+ 7 8-bit DAC mode available
+
+(Table 00213)
+Values for Compaq monitor type:
+ 00h none
+ 01h dual-mode monitor
+ 02h 5153 RGB monitor (RGBI 16-color)
+ 03h Compaq Color monitor
+ 04h 640x400 flat panel (Plasma CGA)
+ 05h VGC monochrome
+ 06h VGC color
+ 07h 8-level mono LCD VGA (internal)
+ 1024x768 mono VGA (external)
+ 08h 16-level mono plasma VGA (internal)
+ 1024x768 color VGA (external)
+ 09h 4-level mono LCD CGA
+ 0Ah 16-level mono LCD VGA
+ 0Bh active-matrix color VGA
+ 0Ch active-matrix mono VGA
+ 0Dh STN color VGA
+--------b-10BF04-----------------------------
+INT 10 - VIDEO - Compaq Extensions - SET MODE SWITCH DELAY
+ AX = BF04h
+ BH = new state of delay (00h enabled, 01h disabled)
+Return: nothing
+Note: the 1993/04/08 sytem ROM appears to use BL instead of BH; a future
+ version of the list will provide more definite information
+SeeAlso: AX=BF05h
+--------b-10BF05-----------------------------
+INT 10 - VIDEO - Compaq Extensions - ENABLE/DISABLE DISPLAY
+ AX = BF05h
+ BH = new state of video
+ 00h off
+ 01h on
+Return: nothing
+Note: the 1993/04/08 sytem ROM appears to use BL instead of BH; a future
+ version of the list will provide more definite information
+SeeAlso: AH=12h/BL=36h,AX=BF04h
+--------b-10BF06-----------------------------
+INT 10 - VIDEO - Compaq SLT/286 - READ GRAY SCALE TABLE
+ AX = BF06h
+ CL = address to be read from gray scale table
+Return: AL = bit 3-0 - Value read from gray scale table
+ CL = address to be read from gray scale table
+SeeAlso: AH=12h/BL=33h,AX=BF07h
+--------b-10BF07-----------------------------
+INT 10 - VIDEO - Compaq SLT/286 - WRITE GRAY SCALE TABLE
+ AX = BF07h
+ CH = value to write to gray scale table
+ CL = address to be written to gray scale table
+Return: nothing
+SeeAlso: AX=BF06h,AX=BF08h
+--------b-10BF08-----------------------------
+INT 10 - VIDEO - Compaq SLT/286 - WRITE COLOR MIX REGISTERS
+ AX = BF08h
+ CH = bits 7-4 green weight
+ bits 3-0 blue weight
+ CL = bits 7-4 unused
+ bits 3-0 red weight
+Return: nothing
+SeeAlso: AH=12h/BL=33h,AX=BF07h
+--------b-10BF09-----------------------------
+INT 10 - VIDEO - Compaq Extensions - TURN ON REVERSE VIDEO
+ AX = BF09h
+Return: CF clear
+Notes: sets bit 6 of port 03CEh index 81h; in some cases also sets index 84h
+ to 6Fh and index 83h to 04h
+ supported by at least the QVision board and the LTE Lite ROM BIOS
+SeeAlso: AX=BF0Ah,AX=BF0Bh
+--------b-10BF0A-----------------------------
+INT 10 - VIDEO - Compaq Extensions - TURN OFF REVERSE VIDEO
+ AX = BF0Ah
+Return: CF clear
+Notes: clears bit 6 of port 03CEh index 81h; in some cases also sets index 84h
+ to 80h and index 83h to FBh
+ supported by at least the QVision board and the LTE Lite ROM BIOS
+SeeAlso: AX=BF09h,AX=BF0Bh
+--------b-10BF0B-----------------------------
+INT 10 - VIDEO - Compaq Extensions - CHECK WHETHER VIDEO REVERSED
+ AX = BF0Bh
+Return: CF clear
+ AX = state (0000h normal video, 0001h reverse video)
+Note: supported by at least the QVision board and the LTE Lite ROM BIOS
+SeeAlso: AX=BF09h,AX=BF0Ah
+--------b-10BF0C-----------------------------
+INT 10 - VIDEO - Compaq Extensions - SET DAC 6-BIT MODE
+ AX = BF0Ch
+Return: CF clear
+Desc: specify that video DAC registers use only six bits of color info
+Note: supported by at least the QVision board and the SystemPro XL ROM BIOS
+SeeAlso: AX=BF0Dh,AX=BF0Eh
+--------b-10BF0D-----------------------------
+INT 10 - VIDEO - Compaq Extensions - SET DAC 8-BIT MODE
+ AX = BF0Dh
+Return: CF clear
+Desc: specify that video DAC registers use all eight bits of color info
+Note: supported by at least the QVision board and the SystemPro XL ROM BIOS
+SeeAlso: AX=BF0Ch,AX=BF0Eh
+--------b-10BF0E-----------------------------
+INT 10 - VIDEO - Compaq Extensions - CHECK DAC 6-BIT/8-BIT mode
+ AX = BF0Eh
+Return: CF clear
+ AL = DAC mode
+ 00h in 6-bit mode
+ 01h in 8-bit mode
+Note: supported by at least the QVision board and the SystemPro XL ROM BIOS
+SeeAlso: AX=BF0Ch,AX=BF0Dh
+--------b-10BF0F-----------------------------
+INT 10 - VIDEO - Compaq Extensions - SET HIGH ADRESS MAP REGISTER
+ AX = BF0Fh
+ BX = high address map location in megabytes, or
+ 0000h to disable high address map, or
+ FFFFh to let ROM configure high address map
+Return: CF clear
+ AX = previous value of high address map register
+Notes: supported by at least the QVision board and the SystemPro XL and LTE
+ Lite ROM BIOSes
+SeeAlso: AX=BF10h
+--------b-10BF10-----------------------------
+INT 10 - VIDEO - Compaq Extensions - GET HIGH ADDRESS MAP REGISTER
+ AX = BF10h
+Return: CF clear
+ AX = current value of high address map register
+Notes: supported by at least the QVision board and the SystemPro XL and LTE
+ Lite ROM BIOSes
+ the Compaq QVision documentation (October 1993) says the value is
+ returned in BX, but this appears to be one of many typos
+SeeAlso: AX=BF0Fh
+--------b-10BF11-----------------------------
+INT 10 - VIDEO - Compaq Extensions - GET EXTENDED ENVIRONMENT
+ AX = BF11h
+Return: AL = BFh if supported
+ CF clear
+ ES:DI -> ASCII signature "COMPAQ"
+ ES:SI -> advanced functionality table (see #00214)
+Note: supported by at least the QVision board and the LTE Lite and ProSignia
+ ROM BIOSes
+SeeAlso: AX=1A00h,AX=BF03h
+
+Bitfields for Compaq advanced video functionality:
+Bit(s) Description (Table 00214)
+ 31 future graphics extensions (reserved, set to 0)
+ 30-16 reserved
+ 15-12 available video memory in 256K blocks, less one (0000 = 256K, etc.)
+ 11-8 reserved
+ 7 QVision modes supported
+ 6 Advanced VGA modes supported
+ 5 Accelerated VGA modes supported
+ 4 standard VGA modes supported
+ 3-2 reserved
+ 1 132-column modes supported
+ 0 reserved
+--------b-10BF12-----------------------------
+INT 10 - VIDEO - Compaq Extensions - NEW ACTIVE MONITOR
+ AX = BF12h
+ BH reserved
+ BL = function mask (see #00215)
+Return: CF clear
+Notes: this function is a NOP if the VGA subsystem is inactive or the current
+ Display Combination Code is 10h or higher
+ supported by at least the QVision board and the LTE Lite and ProSignia
+ ROM BIOSes
+SeeAlso: AX=BF01h,AX=BF02h,#00733
+
+Bitfields for function mask:
+Bit(s) Description (Table 00215)
+ 7 command mode
+ if set, bits 1 and 0 make the monitor active when set
+ if clear, bits 1 and 0 toggle the monitor's state when set
+ 6-2 reserved
+ 1 internal monitor
+ 0 external monitor
+--------b-10BF13-----------------------------
+INT 10 - VIDEO - Compaq QVision - GAMMA CORRECTION
+ AX = BF13h
+ BL = subfunction
+ 00h load gamma correction table for true-color mode
+ DS = BIOS data segment
+ 01h set palette RAM bypass
+ BH = 00h
+Return: nothing
+Note: these functions must be called after a video mode set, and are in
+ effect only for the current video mode
+SeeAlso: #00733
+--------V-10BFA0BXADAD-----------------------
+INT 10 - VIDEO - Compaq ADAPT.COM - INSTALLATION CHECK
+ AX = BFA0h
+ BX = ADADh
+Return: AX = BDBDh if newer ADAPT.COM installed
+ BX = BCD version (BH = major, BL = minor)
+ CL = ???
+ CH = ???
+ DL = ???
+ AX = ADADh if older version of ADAPT.COM installed
+Program: ADAPT is Compaq's Advanced Display Attribute Programming Tool, an
+ optionally-resident utility for setting display colors and cursor
+ size; when resident, it also includes a screen blanker
+SeeAlso: AX=BFA1h,AX=BFA2h,AX=DFA5h
+Index: screen saver;ADAPT
+--------V-10BFA1-----------------------------
+INT 10 - VIDEO - Compaq ADAPT.COM - GET ???
+ AX = BFA1h
+Return: AX = BDBEh if supported
+ CH = current value of ???
+ DL = current value of ???
+SeeAlso: AX=BFA0h,AX=BFA2h
+--------V-10BFA2-----------------------------
+INT 10 - VIDEO - Compaq ADAPT.COM - SET ???
+ AX = BFA2h
+ CH = new value for ???
+ DL = new value for ???
+Return: AX = BDBEh if supported
+SeeAlso: AX=BFA0h,AX=BFA1h
+--------A-10C0-------------------------------
+INT 10 - CU Writer v1.4 - GO TO TEXT ROW AND COLUMN
+ AH = C0h
+ ???
+Return: ???
+SeeAlso: AH=B1h,AH=C1h,AH=C2h,AH=C3h,AH=C4h
+--------V-10C000-----------------------------
+INT 10 - S3 SpeedUp v3.00+ - INSTALLATION CHECK
+ AX = C000h
+Return: AX = FFFFh if installed
+ DX = version number (binary, DH=major, DL=minor)
+ BX = resident code segment
+Program: S3SPDUP is a freeware TSR by Dietmar Meschede to improve the speed
+ of chained video modes (both VESA and VGA Mode 13) on S3-chipset
+ video cards
+SeeAlso: AX=C001h,AX=C002h,AX=C003h,AX=D000h"S3VBE"
+--------V-10C001-----------------------------
+INT 10 - S3 SpeedUp v3.00+ - GET ACTIVE OPTIONS
+ AX = C001h
+Return: AX = FFFFh if function supported
+ BX = currently active options (see #00216)
+SeeAlso: AX=C000h,AX=C002h,AX=C003h
+
+Bitfields for S3SpeedUp options:
+Bit(s) Description (Table 00216)
+ 0 speed up banked VESA modes
+ 1 speed up 320x200 VGA mode 13
+SeeAlso: #00222
+--------V-10C002-----------------------------
+INT 10 - S3 SpeedUp v3.00+ - SET ACTIVE OPTIONS
+ AX = C002h
+ BX = new value for active options (see #00216)
+Return: AX = FFFFh if function supported
+SeeAlso: AX=C000h,AX=C001h,AX=C003h,AX=D003h"S3VBE"
+--------V-10C003-----------------------------
+INT 10 - S3 SpeedUp v3.10+ - GET FLAGS
+ AX = C003h
+Return: AX = FFFFh if function supported
+ BX = flags
+ bit 0: SpeedUp is active
+ bit 1: Windows run after SpeedUp
+SeeAlso: AX=C000h,AX=C001h,AX=C002h,AX=D005h"S3VBE"
+--------V-10C004-----------------------------
+INT 10 - S3 SpeedUp v3.10+ - RESERVED FUNCTIONS
+ AX = C004h-C0FFh
+Return: AX = 5555h
+SeeAlso: AX=C000h
+--------A-10C1-------------------------------
+INT 10 - CU Writer v1.4 - OUTPUT TEXT
+ AH = C1h
+ ???
+Return: ???
+SeeAlso: AH=C0h,AH=C2h,AH=C3h,AH=C4h
+--------A-10C2-------------------------------
+INT 10 - CU Writer v1.4 - REVERSE TEXT
+ AH = C2h
+ ???
+Return: ???
+SeeAlso: AH=C0h,AH=C1h,AH=C3h,AH=C4h
+--------A-10C3-------------------------------
+INT 10 - CU Writer v1.4 - TEXT BAR
+ AH = C3h
+ ???
+Return: ???
+SeeAlso: AH=C0h,AH=C1h,AH=C4h
+--------A-10C4-------------------------------
+INT 10 - CU Writer v1.4 - TEXT MENU
+ AH = C4h
+ ???
+Return: ???
+SeeAlso: AH=C0h,AH=C1h,AH=C3h,AH=D0h
+--------V-10CB00-----------------------------
+INT 10 - UNCHAIN - SAVE CURRENT VGA REGISTERS
+ AX = CB00h
+Note: combined with AX=CB06h, this function permits the use of video mode
+ 13h together with the VGA's unchained mode
+SeeAlso: AX=CB06h,AX=CBFFh
+--------V-10CB01-----------------------------
+INT 10 - UNCHAIN - UPDATE PAGE 1 OFFSET
+ AX = CB01h
+ BX = offset of page 1
+Return: nothing
+Desc: inform UNCHAIN of the location of video page 1 in video memory; the
+ default is 0000h
+SeeAlso: AX=CB02h,AX=CB03h,AX=CB04h,AX=CBFFh
+--------V-10CB02-----------------------------
+INT 10 - UNCHAIN - UPDATE PAGE 2 OFFSET
+ AX = CB02h
+ BX = offset of page 2
+Return: nothing
+Desc: inform UNCHAIN of the location of video page 2 in video memory; the
+ default is 3E80h (16000, for 320x200)
+SeeAlso: AX=CB00h,AX=CB01h,AX=CB03h,AX=CB04h
+--------V-10CB03-----------------------------
+INT 10 - UNCHAIN - UPDATE PAGE 3 OFFSET
+ AX = CB03h
+ BX = offset of page 3
+Return: nothing
+Desc: inform UNCHAIN of the location of video page 3 in video memory; the
+ default is 7D00h (32000, for 320x200)
+SeeAlso: AX=CB01h,AX=CB02h,AX=CB04h
+--------V-10CB04-----------------------------
+INT 10 - UNCHAIN - UPDATE PAGE 4 OFFSET
+ AX = CB04h
+ BX = offset of page 4
+Return: nothing
+Desc: inform UNCHAIN of the location of video page 4 in video memory; the
+ default is BB80h (48000, for 320x200)
+SeeAlso: AX=CB01h,AX=CB02h,AX=CB03h,AX=CB05h
+--------V-10CB05-----------------------------
+INT 10 - UNCHAIN - SAVE PALETTE
+ AX = CB05h
+Return: nothing
+SeeAlso: AX=CB00h,AX=CB06h
+--------V-10CB06-----------------------------
+INT 10 - UNCHAIN - RESTORE VGA REGISTERS
+ AX = CB06h
+Return: nothing
+SeeAlso: AX=CB00h,AX=CB05h,AX=CBFFh
+--------V-10CBFF-----------------------------
+INT 10 - UNCHAIN - INSTALLATION CHECK
+ AX = CBFFh
+Return: AX = CCBBh if installed
+Program: UNCHAIN is a TSR by Colin Buckley which permits use of Borland
+ development tools with Mode X video in the absence of a second
+ monitor
+SeeAlso: AX=CB00h,AX=CB01h,AX=CB06h
+--------V-10CC00-----------------------------
+INT 10 - VIDEO - UltraVision - GET STATUS (INSTALLATION CHECK)
+ AX = CC00h
+ SI = magic value 0000h (if checking version)
+Return: CX = product signature
+ ABCDh UltraVision
+ 5546h ('UF') UltraFont
+ AL = Ultravision extensions
+ 00h enabled
+ FFh disabled
+ AH = card designator
+ BX:00F0h -> palette values (for compatibility with NEWFONT)
+ DX = support for high resolution modes
+ 00h not active
+ 01h active
+ SI = UltraVision version number (v1.2+), high byte=major,low byte=minor
+ unchanged for versions <1.2
+Note: UltraFont is a simplified version of UltraVision for Toshiba;
+ only the signature in CX and the status in AL will be returned
+SeeAlso: AX=CC01h,AX=CC02h
+--------V-10CC01-----------------------------
+INT 10 - VIDEO - UltraVision - DISABLE EXTENSIONS
+ AX = CC01h
+Return: nothing
+Notes: subsequent BIOS calls will be passed through to previous handler
+ should be followed immediately by mode set to restore normal EGA/VGA
+ state
+SeeAlso: AX=CC02h
+--------V-10CC02-----------------------------
+INT 10 - VIDEO - UltraVision - ENABLE EXTENSIONS
+ AX = CC02h
+Return: nothing
+Note: should be followed immediately by mode set to restore previous
+ UltraVision state
+SeeAlso: AX=CC01h
+--------U-10CCAB-----------------------------
+INT 10 - HiFont - INSTALLATION CHECK
+ AX = CCABh
+Return: AX = ABCCh
+Program: HiFont is a 8x19 font driver for standard VGA by Solar Designer
+--------V-10CD00-----------------------------
+INT 10 - VIDEO - UltraVision - LOAD ULTRAVISION PALETTE (color EGA,VGA)
+ AX = CD00h
+ CL = palette table number (01h-07h for v1.x, 01h-0Fh for v2+)
+ DS:DX -> 16-byte palette register list (colors for registers 00h-0Fh)
+Return: nothing
+Notes: if palette locking is in effect for the current mode, the new colors
+ will be displayed immediately; otherwise, the system reverts to the
+ default palette
+ palette table 0 is reserved for the default palette and cannot be set
+ UltraVision always sets the border color to black
+SeeAlso: AX=CD01h,AX=CD02h
+--------V-10CD01-----------------------------
+INT 10 - VIDEO - UltraVision - SET PALETTE LOCKING STATUS (color EGA,VGA)
+ AX = CD01h
+ CL = palette locking value
+ 00h none
+ 01h text modes only (02h,03h)
+ FFh all modes (all standard color text and graphics modes)
+Return: nothing
+Notes: intended for video modes with 16 or fewer colors
+SeeAlso: AX=1000h,AX=1002h,AX=CD00h,AX=CD03h
+--------V-10CD02-----------------------------
+INT 10 - VIDEO - UltraVision - GET ULTRAVISION PALETTE (EGA,VGA)
+ AX = CD02h
+Return: CL = palette table number
+ DS:DX -> 17-byte palette register list (see #00217)
+ DS:SI -> current font names table (see #00218,#00219)
+Note: only the font names are valid on monochrome EGA systems
+SeeAlso: AX=1009h,AX=CD00h
+
+Format of UltraVision palette register list:
+Offset Size Description (Table 00217)
+ 00h 16 BYTEs colors for palette registers 00h through 0Fh
+ 10h BYTE border color
+
+Format of UltraVision v2+ current font names table:
+Offset Size standard EGA HiRes EGA VGA (Table 00218)
+ 00h 8 BYTEs N/A F19 font F20 font
+ 08h 8 BYTEs F14 font F14 font F14 font
+ 10h 8 BYTEs N/A F11 font F10 font
+ 18h 8 BYTEs F8 font F8 font F8 font
+
+Format of UltraVision v1.x current font names table:
+Offset Size HiRes EGA (Table 00219)
+ 00h 8 BYTEs F19/F14 font
+ 08h 8 BYTEs F11/F8 font
+--------V-10CD03-----------------------------
+INT 10 - VIDEO - UltraVision - GET PALETTE LOCKING STATUS (color EGA,VGA)
+ AX = CD03h
+Return: CL = palette locking value
+ 00h none
+ 01h text modes only
+ FFh all modes
+SeeAlso: AX=CD01h
+--------V-10CD04-----------------------------
+INT 10 - VIDEO - UltraVision - GET UltraVision TEXT MODE (EGA,VGA)
+ AX = CD04h
+Return: AL = mode number (see #00220)
+SeeAlso: AH=0Fh,AX=CC00h,AH=CDh
+
+(Table 00220)
+Values for UltraVision video mode number:
+ 11h 80x25
+ 12h 80x43, 80x50
+ 13h 80x34, 80x36
+ 14h 80x60, 80x63
+ 19h 94x25
+ 1Ah 94x43, 94x50
+ 1Bh 94x36
+ 1Ch 94x63
+ 21h 108x25
+ 22h 108x43, 108x50
+ 23h 107x34, 108x36
+ 24h 108x60, 108x63
+ 31h 120x25
+ 32h 120x43, 120x50
+ 33h 132x25
+ 34h 132x44, 132x50
+ 39h 120x36
+ 3Ah 120x63
+ 3Bh 132x36
+ 3Ch 132x60
+Index: video modes;UltraVision
+--------V-10CD05-----------------------------
+INT 10 - VIDEO - UltraVision - SET CURSOR TYPE (EGA,VGA)
+ AX = CD05h
+ CL = type
+ 00h line cursor
+ FFh box cursor
+Return: nothing
+Note: sets default cursor type for text-based programs
+SeeAlso: AH=01h,AX=CD06h
+--------V-10CD06-----------------------------
+INT 10 - VIDEO - UltraVision - GET CURSOR TYPE (EGA,VGA)
+ AX = CD06h
+Return: CL = type
+ 00h line cursor
+ FFh box cursor
+SeeAlso: AH=03h,AX=CD05h
+--------V-10CD07-----------------------------
+INT 10 - VIDEO - UltraVision v1.2+ - SET UNDERLINE STATUS (EGA,VGA)
+ AX = CD07h
+ CL = hardware underline status (see #00221)
+ BL = foreground color for normal text (FFh = current)
+ BH = foreground color for bright text (FFh = current)
+Return: CL = hardware underline status
+ BL = current foreground color for normal text
+ BH = current foreground color for bright text
+Notes: when underline or strikeout is enabled in color text modes, the
+ specified colors will be assigned temporarily to colors 01h and 09h,
+ allowing affected text to match non-underlined text. The color
+ remapping uses values from the current onscreen palette regardless
+ of the palette locking status (see AX=CD01h)
+ specify the standard colors (BL=01h,BH=09h) to enable underline or
+ strikeout without color remapping
+SeeAlso: AX=CD08h
+
+(Table 00221)
+Values for hardware underline status:
+ 00h off (color systems only)
+ 01h underline below characters
+ 02h strike through characters
+--------V-10CD08-----------------------------
+INT 10 - VIDEO - UltraVision v1.2+ - GET UNDERLINE STATUS (EGA,VGA)
+ AX = CD08h
+Return: CL = hardware underline status (see #00221)
+ BL = foreground color for normal text
+ BH = foreground color for bright text
+Note: only CL is valid on monochrome EGA systems
+SeeAlso: AX=CD07h
+--------V-10CD0F-----------------------------
+INT 10 - VIDEO - UltraVision - GET POINTER TO ??? (EGA,VGA)
+ AX = CD0Fh
+Return: DS:DI -> pointer to ???
+Note: This gets called by DR DOS "Panther" SECURITY. SECURITY also issues a
+ number of calls to the other UltraVision functions in the AH=CCh and
+ AH=CDh range, and carefully checks signatures.
+SeeAlso: AX=1100h,AX=1103h
+--------V-10CD10-----------------------------
+INT 10 - VIDEO - UltraVision - LOAD USER FONT (EGA,VGA)
+ AX = CD10h
+ BH = bytes per character (08h,0Ah,0Bh,0Eh,13h,14h)
+ CX = ABCDh load 9xN alternate font (v2+)
+ else number of characters to load
+ DX = character offset into font table
+ DS:SI -> 8-byte ASCII font name
+ ES:BP -> font definitions
+Return: AX = FFFFh if invalid font parameters
+Notes: loads the designated characters into UltraVision's resident font area
+ should be followed by a video mode set to reload character generator
+SeeAlso: AX=1100h,AX=1103h
+--------V-10CD-------------------------------
+INT 10 - VIDEO - UltraVision - SET ULTRAVISION TEXT MODE (EGA,VGA)
+ AH = CDh
+ AL = text mode number (see #00220)
+Return: AX = CDCDh if invalid mode
+SeeAlso: AX=CD04h
+--------A-10D0-------------------------------
+INT 10 - CU Writer v1.4 - LOAD PICTURE
+ AH = D0h
+ ???
+Return: ???
+SeeAlso: AH=B0h"CU Writer",AH=C4h
+--------V-10D0-------------------------------
+INT 10 U - VIDEO - HP 100LX/200LX - SET ZOOM MODE
+ AH = D0h
+ AL = zoom mode
+ 02h 80x25 mono
+ 03h 80x25 color
+ 80h 64x18 mono
+ 81h 64x18 color
+ 82h 40x25 mono
+ 83h 40x25 color
+ 84h 40x16 mono
+ 85h 40x16 color
+Return: nothing
+Note: zoom mode can only be changed within zoom modes of the same color
+ scheme; if needed, set to mono/color with AH=00h,AL=02h/03h; with
+ mono video modes AL=07h or AL=21h only 80x25 and 40x16 will work
+ the current zoom mode is stored in the BIOS data area at 0040h:009Fh
+SeeAlso: AH=D1h,AH=D4h
+--------V-10D000-----------------------------
+INT 10 - S3VBE/Core2.0 v3.00+ - INSTALLATION CHECK
+ AX = D000h
+Return: AX = FFFFh if installed
+ BX = resident code segment
+ DX = version (binary, DH = major, DL = minor)
+Program: S3VBE/Core2.0 is a freeware TSR by Dietmar Meschede to provide
+ VESA 2.0 services on S3-based video cards with VESA 1.2 BIOS
+SeeAlso: AX=D001h"S3VBE",AX=D002h"S3VBE",AX=D003h"S3VBE",AX=D005h"S3VBE"
+--------V-10D001-----------------------------
+INT 10 - S3VBE/Core2.0 v3.00+ - GET ACTIVE OPTIONS
+ AX = D001h
+Return: AX = FFFFh if supported
+ BX = currently active options (see #00222)
+SeeAlso: AX=D000h"S3VBE",AX=D002h"S3VBE"
+
+Bitfields for S3VBE options:
+Bit(s) Description (Table 00222)
+ 0 VESA VBE v2.0 extensions enabled
+ 1 linear frame buffer enabled
+ 2 low-resolution video mode support enabled
+ 8 never clear video memory during VBE mode set (v3.10+)
+---debug options---
+ 12 report VBE version 1.2 (v3.10+)
+ 13 always fail AX=4F0Ah (v3.10+)
+ 14 don't copy video mode list (v3.12+)
+SeeAlso: #00216
+--------V-10D002-----------------------------
+INT 10 - S3VBE/Core2.0 v3.00+ - SET ACTIVE OPTIONS
+ AX = D002h
+ BX = new active options (see #00222)
+Return: AX = FFFFh if supported
+SeeAlso: AX=D000h"S3VBE",AX=D001h"S3VBE"
+--------V-10D003-----------------------------
+INT 10 U - S3VBE/Core2.0 v3.10+ - GET VBE/Core CAPABILITIES
+ AX = D003h
+Return: AX = FFFFh if supported
+ BX = capabilities
+ bit 0: SpeedUp = activate/deactivate linear addressing at
+ A0000h for VBE functions 04h/05h
+SeeAlso: AX=D000h"S3VBE",AX=D001h"S3VBE",AX=D004h"S3VBE",AX=D005h"S3VBE"
+--------V-10D004-----------------------------
+INT 10 U - S3VBE/Core2.0 v3.10+ - ACTIVATE SPEED-UP
+ AX = D004h
+Return: AX = FFFFh if supported
+ BX = status
+ 0000h SpeedUp activated
+ 0001h SpeedUp not possible (wrong memory organization for mode)
+ 0002h SpeedUp not possible (linear frame buffer active)
+Note: called by S3 SpeedUp (see AX=C000h)
+SeeAlso: AX=C000h"SpeedUp",AX=D000h"S3VBE",AX=D003h"S3VBE",AX=D005h"S3VBE"
+--------V-10D005-----------------------------
+INT 10 U - S3VBE/Core2.0 v3.10+ - DEACTIVATE SPEED-UP
+ AX = D005h
+Return: AX = FFFFh if supported
+ BX = status
+ 0000h SpeedUp deactivated
+ 0001h SpeedUp not possible (wrong memory organization for mode)
+ 0002h SpeedUp not possible (linear frame buffer active)
+Notes: called by S3 SpeedUp (see AX=C000h)
+ functions 06h-FFh (e.g. AX=D006h-D0FFh) are considered reserved by
+ v3.10+ and return AX=5555h
+SeeAlso: AX=C000h"SpeedUp",AX=D000h"S3VBE",AX=D003h"S3VBE",AX=D004h"S3VBE"
+--------V-10D1-------------------------------
+INT 10 U - VIDEO - HP 100LX/200LX - INTERNAL - ???
+ AH = D1h
+ AL = 01h
+Return: ???
+Note: called by AH=D0h
+SeeAlso: AH=D0h,AH=D4h
+--------V-10D4-------------------------------
+INT 10 U - VIDEO - HP 100LX/200LX - INTERNAL - ???
+ AH = D4h
+ AL = 29h
+Return: ???
+Note: called by AH=D0h
+SeeAlso: AH=D0h,AH=D1h
+--------V-10D5-------------------------------
+INT 10 - Netroom SCRNCLK - ???
+ AH = D5h
+ ???
+Return: ???
+Program: SCRNCLK is a "cloaked" screen accelerator included with Netroom
+--------t-10DAAD-----------------------------
+INT 10 - TSRUNIT v1.10 - INSTALLATION CHECK
+ AX = DAADh
+ BX = check signature (different for each TSR)
+ CX = 0000h
+Return: CX = return signature (nonzero) if installed
+ ES = program segment prefix
+Program: TSRUNIT is a Turbo Pascal unit for creating TSRs by Nir Sofer
+--------V-10DFA5-----------------------------
+INT 10 U - VIDEO - Compaq ADAPT.COM - GET ??? DATA AREA
+ AX = DFA5h
+Return: AX = BDBFh if supported
+ ES:DI -> ??? data area
+ BX = ES
+SeeAlso: AX=BFA0h
+--------V-10EE-------------------------------
+INT 10 - VIDEO - IBM "Private" Function
+ AH = EEh
+SeeAlso: INT 13/AH=FFh"IBM"
+--------V-10EF-------------------------------
+INT 10 - VIDEO - MSHERC.COM - GET VIDEO ADAPTER TYPE AND MODE
+ AH = EFh
+Return: DL = video adapter type
+ 00h original Hercules
+ 01h Hercules Plus (port 03BAh reads x001xxxxx)
+ 02h Hercules InColor (port 03BAh reads x101xxxxx)
+ FFh not a Hercules-compatible card (port 03BAh bit 7 not pulsing)
+ DH = memory mode byte
+ 00h "half" mode
+ 01h "full" mode
+ FFh not a Hercules-compatible card
+Program: MSHERC.COM/QBHERC.COM is a support program for the Microsoft Quick
+ languages which makes their graphics libraries compatible with a
+ Hercules card by adding video modes 08h and 88h, and supporting
+ text in the new graphics modes.
+Notes: while in mode 08h or 88h, INT 10 supports the Hercules card much like
+ a CGA.
+ MSHERC performs an installation check by setting DL=FFh and testing
+ whether it has been changed on return, which causes it to reinstall
+ itself when no HGC is present (or HGC emulation has temporarily been
+ disabled); a better installation check would be to use DX=80FFh and
+ check whether DX has been changed
+ reportedly returns DH=00h on some not-entirely-Hercules-compatible
+ cards
+Index: installation check;MSHERC
+--------V-10F0-------------------------------
+INT 10 - EGA Register Interface Library - READ ONE REGISTER
+ AH = F0h
+ BL = register number
+ BH = 00h
+ DX = group index (see #00223)
+Return: BL = data
+Note: the RIL is provided by EGA.SYS, the Microsoft Mouse driver, the OS/2
+ compatibility box, and others; it is used for software virtualization
+ of write-only registers on an EGA video adapter, so that multiple
+ programs may peacefully coexist without clobbering each other's
+ display settings
+SeeAlso: AH=F1h"EGA",AH=F2h"EGA",AH=FAh"EGA",INT 2F/AX=BC00h
+
+(Table 00223)
+Values for group index:
+ Pointer/data chips
+ 00h CRT Controller (25 reg) 3B4h mono modes, 3D4h color modes
+ 08h Sequencer (5 registers) 3C4h
+ 10h Graphics Controller (9 registers) 3CEh
+ 18h Attribute Controller (20 registers) 3C0h
+ Single registers
+ 20h Miscellaneous Output register 3C2h
+ 28h Feature Control register (3BAh mono modes, 3DAh color modes)
+ 30h Graphics 1 Position register 3CCh
+ 38h Graphics 2 Position register 3CAh
+--------V-10F0-------------------------------
+INT 10 - VHRBIOS.SYS - INSTALLATION CHECK
+ AH = F0h
+Return: BX = 4F4Bh ('OK')
+Program: VHRBIOS.SYS is a driver for the Micro Display Systems "TheGenius"
+ black&white A4/portrait monitor
+SeeAlso: AH=F1h"VHRBIOS.SYS",AH=F2h"VHRBIOS.SYS",AH=F4h"VHRBIOS.SYS"
+SeeAlso: AH=96h"VHRBIOS.SYS"
+--------V-10F1-------------------------------
+INT 10 - EGA Register Interface Library - WRITE ONE REGISTER
+ AH = F1h
+ DX = group index (see #00223)
+ if single register:
+ BL = value to write
+ otherwise
+ BL = register number
+ BH = value to write
+Return: BL = data
+Note: the RIL is provided by EGA.SYS, the Microsoft Mouse driver, the OS/2
+ compatibility box, and others
+SeeAlso: AX=7F05h,AH=F0h"EGA",AH=F3h"EGA",AH=FAh"EGA"
+--------V-10F1-------------------------------
+INT 10 - VHRBIOS.SYS - SET REVERSE VIDEO
+ AH = F1h
+ AL = new video state
+ (bit 5 set for black text on white, clear for white on black)
+Return: ???
+Program: VHRBIOS.SYS is a driver for the Micro Display Systems "TheGenius"
+ black&white A4/portrait monitor
+SeeAlso: AH=F0h"VHRBIOS.SYS",AH=F3h"VHRBIOS.SYS"
+--------V-10F2-------------------------------
+INT 10 - EGA Register Interface Library - READ REGISTER RANGE
+ AH = F2h
+ CH = starting register number
+ CL = number of registers (>1)
+ DX = group index (00h,08h,10h,18h) (see #00223)
+ ES:BX -> buffer, CL bytes
+Return: nothing
+Note: the RIL is provided by EGA.SYS, the Microsoft Mouse driver, the OS/2
+ compatibility box, and others
+SeeAlso: AH=F0h"EGA",AH=F3h"EGA",AH=FAh"EGA"
+--------V-10F2-------------------------------
+INT 10 - VHRBIOS.SYS - ???
+ AH = F2h
+Return: ???
+Program: VHRBIOS.SYS is a driver for the Micro Display Systems "TheGenius"
+ black&white A4/portrait monitor
+SeeAlso: AH=F0h"VHRBIOS.SYS",AH=F4h"VHRBIOS.SYS"
+--------V-10F3-------------------------------
+INT 10 - EGA Register Interface Library - WRITE REGISTER RANGE
+ AH = F3h
+ CH = starting register
+ CL = number of registers (>1)
+ DX = group index (00h,08h,10h,18h) (see #00223)
+ ES:BX -> buffer, CL bytes
+Return: nothing
+Note: the RIL is provided by EGA.SYS, the Microsoft Mouse driver, the OS/2
+ compatibility box, and others
+SeeAlso: AX=7F05h,AH=F1h"EGA",AH=F2h"EGA",AH=F4h"EGA"
+--------V-10F3-------------------------------
+INT 10 - VHRBIOS.SYS - SWITCH BETWEEN DUAL MONITORS???
+ AH = F3h
+Return: ???
+Program: VHRBIOS.SYS is a driver for the Micro Display Systems "TheGenius"
+ black&white A4/portrait monitor
+SeeAlso: AH=F0h"VHRBIOS.SYS",AH=F4h"VHRBIOS.SYS",AH=F6h"VHRBIOS.SYS"
+--------V-10F4-------------------------------
+INT 10 - EGA Register Interface Library - READ REGISTER SET
+ AH = F4h
+ CX = number of registers to read (>1)
+ ES:BX -> table of register records (see #00224)
+Return: register values in table filled in
+Note: the RIL is provided by EGA.SYS, the Microsoft Mouse driver, the OS/2
+ compatibility box, and others
+SeeAlso: AH=F0h"EGA",AH=F2h"EGA",AH=F5h"EGA"
+
+Format of EGA RIL entries in table of register records:
+Offset Size Description (Table 00224)
+ 00h WORD group index
+ Pointer/data chips
+ 00h CRTC (3B4h mono modes, 3D4h color modes)
+ 08h Sequencer 3C4h
+ 10h Graphics Controller 3CEh
+ 18h Attribute Controller 3C0h
+ Single registers
+ 20h Miscellaneous Output register 3C2h
+ 28h Feature Control register (3BAh mono modes, 3DAh color)
+ 30h Graphics 1 Position register 3CCh
+ 38h Graphics 2 Position register 3CAh
+ 02h BYTE register number (0 for single registers)
+ 03h BYTE register value
+--------V-10F4-------------------------------
+INT 10 - VHRBIOS.SYS - GET VERSION
+ AH = F4h
+Return: AX = driver version (AH = major, AL = minor)
+Program: VHRBIOS.SYS is a driver for the Micro Display Systems "TheGenius"
+ black&white A4/portrait monitor
+SeeAlso: AH=F0h"VHRBIOS.SYS",AH=F5h"VHRBIOS.SYS"
+--------V-10F5-------------------------------
+INT 10 - EGA Register Interface Library - WRITE REGISTER SET
+ AH = F5h
+ CX = number of registers to write (>1)
+ ES:BX -> table of records (see #00224)
+Return: nothing
+Note: the RIL is provided by EGA.SYS, the Microsoft Mouse driver, the OS/2
+ compatibility box, and others
+SeeAlso: AX=7F05h,AH=F1h"EGA",AH=F3h"EGA",AH=F4h"EGA"
+--------V-10F5-------------------------------
+INT 10 - VHRBIOS.SYS - GET VENDOR ID
+ AH = F5h
+Return: AXBX = vendor ID (4D44h:5349h = 'MDSI' for Micro Display Systems Inc.)
+Program: VHRBIOS.SYS is a driver for the Micro Display Systems "TheGenius"
+ black&white A4/portrait monitor
+SeeAlso: AH=F0h"VHRBIOS.SYS",AH=F4h"VHRBIOS.SYS",AH=F6h"VHRBIOS.SYS"
+--------V-10F6-------------------------------
+INT 10 - EGA Register Interface Library - REVERT TO DEFAULT REGISTERS
+ AH = F6h
+Return: nothing
+Note: provided by the Microsoft Mouse driver, OS/2 compatibility box, and
+ others
+SeeAlso: AH=F5h"EGA",AH=F7h"EGA"
+--------V-10F6-------------------------------
+INT 10 - VHRBIOS.SYS - GET INFO
+ AH = F6h
+ AL = what to get
+ 00h device driver state
+ Return: AX = device driver state
+ 01h video mode info
+ Return: AL = video mode
+ DH = screen height in rows
+ DL = screen width in columns
+Program: VHRBIOS.SYS is a driver for the Micro Display Systems "TheGenius"
+ black&white A4/portrait monitor
+SeeAlso: AH=F0h"VHRBIOS.SYS",AH=F4h"VHRBIOS.SYS",AH=96h"VHRBIOS.SYS
+--------V-10F7-------------------------------
+INT 10 - EGA Register Interface Library - DEFINE DEFAULT REGISTER TABLE
+ AH = F7h
+ DX = port number
+ Pointer/data chips
+ 00h CRTC (3B4h mono modes, 3D4h color modes)
+ 08h Sequencer 3C4h
+ 10h Graphics Controller 3CEh
+ 18h Attribute Controller 3C0h
+ Single registers
+ 20h Miscellaneous Output register 3C2h
+ 28h Feature Control register (3BAh mono modes, 3DAh color modes)
+ 30h Graphics 1 Position register 3CCh
+ 38h Graphics 2 Position register 3CAh
+ ES:BX -> table of one-byte entries, one byte to be written to each
+ register
+Return: nothing
+Note: the RIL is provided by EGA.SYS, the Microsoft Mouse driver, the OS/2
+ compatibility box, and others
+SeeAlso: AH=F0h"EGA",AH=F6h"EGA"
+--------V-10FA--BX0000-----------------------
+INT 10 - EGA Register Interface Library - INTERROGATE DRIVER
+ AH = FAh
+ BX = 0000h
+Return: BX = 0000h if RIL driver not present
+ ES:BX -> EGA Register Interface version number, if present:
+ byte 0 = major release number
+ byte 1 = minor release number
+Note: the RIL is provided by EGA.SYS, the Microsoft Mouse driver, the OS/2
+ compatibility box, and others
+SeeAlso: AH=F0h"EGA",AH=F6h"EGA",INT 2F/AX=BC00h
+--------K-10FA-------------------------------
+INT 10 - FASTBUFF.COM - INSTALLATION CHECK
+ AH = FAh
+Return: AX = 00FAh if installed
+ ES = segment of resident code
+Program: FASTBUFF.COM is a keyboard speedup/screen blanking utility by David
+ Steiner
+Index: screen saver;FASTBUFF
+--------V-10FE-------------------------------
+INT 10 - TopView - GET SHADOW BUFFER
+ AH = FEh
+ ES:DI -> assumed video buffer
+ B800h:0000h color text/CGA graphics, B000h:0000h mono text,
+ or A000h:0000h EGA/VGA graphics (RSIS environments only)
+Return: ES:DI -> actual video buffer for calling process
+Desc: Determine the address of the virtual screen to which the program
+ should write instead of the actual video memory; this permits
+ programs to be multitasked without interfering with each other's
+ output, and allows memory managers to move the video memory to
+ permit larger programs to be loaded.
+Notes: if no multitasker or RSIS-compliant environment is installed, ES:DI is
+ returned unchanged; RSIS is the Relocated Screen Interface
+ Specification
+ for display pages other than 0, use AH=05h and AH=0Fh to determine
+ whether a particular page exists
+ TopView requires a call to AH=FFh to notify it that the screen has
+ changed; DESQview will check for changes itself until the first call
+ to AH=FFh
+SeeAlso: AH=05h,AX=5201h,AH=FFh,INT 15/AX=1024h,INT 21/AH=2Bh"DESQview"
+SeeAlso: INT 21/AH=ECh"DoubleDOS"
+--------V-10FF-------------------------------
+INT 10 - TopView - UPDATE SCREEN FROM SHADOW BUFFER
+ AH = FFh
+ CX = number of consecutive changed characters
+ ES:DI -> first changed character in shadow buffer
+Return: nothing
+Notes: avoid CX=0000h
+ DESQview will discontinue the automatic screen updating initiated by
+ AH=FEh after this call
+ not supported (ignored) by DESQview/X 1.0x
+SeeAlso: AH=93h,AH=FEh
+--------E-10FF-------------------------------
+INT 10 - DJ GO32.EXE 80386+ DOS extender - VIDEO EXTENSIONS
+ AH = FFh
+ AL = video mode (see #00225)
+Program: GO32.EXE is a DOS extender included as part of the 80386 port of the
+ GNU C/C++ compiler by DJ Delorie and distributed as DJGPP
+SeeAlso: AH=00h,INT 21/AH=FFh"GO32"
+
+(Table 00225)
+Values for GO32 video mode number:
+ 00h 80x25 text
+ 01h default text
+ 02h CXxDX text
+ 03h biggest text
+ 04h 320x200 graphics
+ 05h default graphics
+ 06h CXxDX graphics
+ 07h biggest non-interlaced graphics
+ 08h biggest graphics
+Index: video modes;GO32
+--------V-10FF-------------------------------
+INT 10 - VIDEO - Oak VGA BIOS v1.02+ - SET EMULATION
+ AH = FFh
+ AL = emulation
+ 43h ('C') CGA emulation
+ 45h ('E') EGA emulation
+ 4Dh ('M') Hercules emulation
+ 56h ('V') VGA emulation
+ ES:DI -> signature string "Calamity"
+Return: VGA switched to suggested mode
+SeeAlso: AH=00h,AX=007Fh/BH=00h,AX=007Fh/BH=02h,AX=5F01h
+--------R-10FF00-----------------------------
+INT 10 - CARBON COPY PLUS v5.0 - CHECK IF CC CONNECTED TO CCHELP
+ AX = FF00h
+Return: BL = state
+ 00h not connected
+ 01h connected
+SeeAlso: AX=FF01h,AX=FF02h
+--------R-10FF01-----------------------------
+INT 10 - CARBON COPY PLUS v5.0 - DISCONNECT AND RESET LINE
+ AX = FF01h
+Return: nothing
+SeeAlso: AX=FF00h,AX=FF02h
+--------R-10FF02-----------------------------
+INT 10 - CARBON COPY PLUS v5.0 - GET LAST PHONE NUMBER DIALED
+ AX = FF02h
+Return: ES:DI -> ASCIZ phone number
+SeeAlso: AX=FF00h,AX=FF01h
+--------C-11---------------------------------
+INT 11 - CPU-generated (80486+) - ALIGNMENT CHECK
+Desc: automatically generated by the CPU when the AC flag is set, the current
+ privilege level is 3, and a misaligned memory access (WORD not on an
+ even address or DWORD not on a multiple of 4) is made
+Note: not all V86 monitors allow the AC flag to be set, such as Turbo
+ Debugger 386
+SeeAlso: INT 12"CPU"
+--------B-11---------------------------------
+INT 11 - BIOS - GET EQUIPMENT LIST
+Return: (E)AX = BIOS equipment list word (see #00226,#03215 at INT 4B"Tandy")
+Note: since older BIOSes do not know of the existence of EAX, the high word
+ of EAX should be cleared before this call if any of the high bits
+ will be tested
+SeeAlso: INT 4B"Tandy 2000",MEM 0040h:0010h
+
+Bitfields for BIOS equipment list:
+Bit(s) Description (Table 00226)
+ 0 floppy disk(s) installed (number specified by bits 7-6)
+ 1 80x87 coprocessor installed
+ 3-2 number of 16K banks of RAM on motherboard (PC only)
+ number of 64K banks of RAM on motherboard (XT only)
+ 2 pointing device installed (PS)
+ 3 unused (PS)
+ 5-4 initial video mode
+ 00 EGA, VGA, or PGA
+ 01 40x25 color
+ 10 80x25 color
+ 11 80x25 monochrome
+ 7-6 number of floppies installed less 1 (if bit 0 set)
+ 8 DMA support installed (PCjr, Tandy 1400LT)
+ DMA support *not* installed (Tandy 1000's)
+ 11-9 number of serial ports installed
+ 12 game port installed
+ 13 serial printer attached (PCjr)
+ internal modem installed (PC/Convertible)
+ 15-14 number of parallel ports installed
+---Compaq, Dell, and many other 386/486 machines--
+ 23 page tables set so that Weitek coprocessor addressable in real mode
+ 24 Weitek math coprocessor present
+---Compaq Systempro---
+ 25 internal DMA parallel port available
+ 26 IRQ for internal DMA parallel port (if bit 25 set)
+ 0 = IRQ5
+ 1 = IRQ7
+ 28-27 parallel port DMA channel
+ 00 DMA channel 0
+ 01 DMA channel 0 ???
+ 10 reserved
+ 11 DMA channel 3
+Notes: Some implementations of Remote (Initial) Program Loader (RPL/RIPL)
+ don't set bit 0 to indicate a "virtual" floppy drive, although the
+ RPL requires access to its memory image through a faked drive A:.
+ This may have caused problems with releases of DOS 3.3x and earlier,
+ which assumed A: and B: to be invalid drives then and would discard
+ any attempts to access these drives. Implementations of RPL should
+ set bit 0 to indicate a "virtual" floppy.
+ The IBM PC DOS 3.3x-2000 IBMBIO.COM contains two occurences of code
+ sequences like:
+ INT 11h
+ JMP SHORT skip
+ DB 52h,50h,53h; "RPS"
+ skip: OR AX,1
+ TEST AX,1
+ While at the first glance this seems to be a bug since it just
+ wastes memory and the condition is always true, this could well be
+ a signature for an applyable patch to stop it from forcing AX bit 0
+ to be always on. MS-DOS IO.SYS does not contain these signatures,
+ however.
+BUGs: Some old BIOSes didn't properly report the count of floppy drives
+ installed to the system. In newer systems INT 13h/AH=15h can be
+ used to retrieve the number of floppy drives installed.
+ Award BIOS v4.50G and v4.51PG erroneously set bit 0 even if there are
+ no floppy drives installed; use two calls to INT 13/AH=15h to
+ determine whether any floppies are actually installed
+SeeAlso: INT 12"BIOS",#03215 at INT 4B"Tandy 2000"
+--------d-11----SI6A6A-----------------------
+INT 11 - Columbia Data Products Standard Device Level Protocol (SDLP) 1.6
+ SI = 6A6Ah
+ AH = command (see #00227)
+ AL = SCSI Addressing (see #00228)
+Return: CF clear if successful
+ DI = 6A6Ah if AH=01h on entry (maybe for all functions???)
+ AH = ??? for command 01h
+ CF set on error
+ AL = error code
+SeeAlso: INT 21/AX=4402h"ASPI"
+
+(Table 00227)
+Values for SDLP command:
+ 00h SDLP initialization
+ 01h SDLP System Identify
+ 02h simple read sectors
+ 03h simple write sectors
+ 04h simple verify sectors/seek to sector
+ 05h get device size/type
+ 06h ready unit
+ 07h format unit
+ 08h diagnostics
+ 09h rewind
+ 0Ah erase
+ 0Bh write filemarks
+ 0Ch space
+ 0Dh prevent/allow media removal
+ 0Eh load/unload media
+ 0Fh reserved - returns good status
+ 10h set block size
+ 11h write setmark
+ 12h set error level
+ 13h get address of Request Sense Buffer
+ 14h get SDLP error via Request Sense
+ F0h Vendor Unique Function (WD7000-FASST2 only)
+ FDh reset current SCSI HAC
+ FEh get/set current SCSI HAC
+ FFh execute SCSI command
+
+Bitfields for SDLP SCSI addressing:
+Bit(s) Description (Table 00228)
+ 7-6 Host Adapter
+ 5-3 SCSI Target ID
+ 2-0 SCSI Target LUN (logical unit number)
+--------V-110225BX6900-----------------------
+INT 11 - Blank-It Screen Blanker - INSTALLATION CHECK
+ AX = 0225h
+ BX = 6900h
+Return: BL = 23h
+ ES:DI -> ASCIZ "BLNKIT"
+Program: Blank-It is a resident screen blanker by Rhode Island Soft Systems,
+ Inc.
+SeeAlso: AX=0225h/BX=6902h,AX=0225h/BX=6908h,AX=0225h/BX=6909h,INT 14/AX=AA01h
+Index: screen saver;Blank-It
+--------V-110225BX6901-----------------------
+INT 11 - Blank-It Screen Blanker - SET TIMEOUT FOR SCREEN BLANKING
+ AX = 0225h
+ BX = 6901h
+ CX = timeout in timer ticks (18.2/second) or 0000h to disable timeout
+ largest value is 59 minutes (FBACh or 64428)
+Return: CF clear if successful
+ DI = 6A6Ah (possibly also 6A6Ah for all following functions)
+ AH = ???
+ CF set on error
+ AL = error code
+SeeAlso: AX=0225h/BX=6900h,AX=0225h/BX=6904h
+Index: screen saver;Blank-It
+--------V-110225BX6902-----------------------
+INT 11 - Blank-It Screen Blanker - ENABLE THE SOFTWARE
+ AX = 0225h
+ BX = 6902h
+Return: CF clear if successful
+ CF set on error
+ AL = error code
+SeeAlso: AX=0225h/BX=6900h,AX=0225h/BX=6903h
+Index: screen saver;Blank-It
+--------V-110225BX6903-----------------------
+INT 11 - Blank-It Screen Blanker - DISABLE THE SOFTWARE
+ AX = 0225h
+ BX = 6903h
+Return: CF clear if successful
+ CF set on error
+ AL = error code
+SeeAlso: AX=0225h/BX=6900h,AX=0225h/BX=6902h
+Index: screen saver;Blank-It
+--------V-110225BX6904-----------------------
+INT 11 - Blank-It Screen Blanker - GET BLANKING TIMEOUT
+ AX = 0225h
+ BX = 6904h
+Return: CF clear if successful
+ BX = timeout (see AX=0225h/BX=6901h)
+ CF set on error
+ AL = error code
+SeeAlso: AX=0225h/BX=6900h,AX=0225h/BX=6901h
+Index: screen saver;Blank-It
+--------V-110225BX6905-----------------------
+INT 11 - Blank-It Screen Blanker - ENABLE WINDOWS COMPATIBILITY MODE
+ AX = 0225h
+ BX = 6905h
+Return: CF clear if successful
+ CF set on error
+ AL = error code
+SeeAlso: AX=0225h/BX=6900h,AX=0225h/BX=6906h
+Index: screen saver;Blank-It
+--------V-110225BX6906-----------------------
+INT 11 - Blank-It Screen Blanker - DISABLE WINDOWS COMPATIBILITY MODE
+ AX = 0225h
+ BX = 6906h
+Return: CF clear if successful
+ CF set on error
+ AL = error code
+Program: Blank-It is a resident screen blanker by Rhode Island Soft Systems,
+ Inc.
+SeeAlso: AX=0225h/BX=6900h,AX=0225h/BX=6905h
+Index: screen saver;Blank-It
+--------V-110225BX6907-----------------------
+INT 11 - Blank-It Screen Blanker - UNBLANK THE SCREEN
+ AX = 0225h
+ BX = 6907h
+Return: CF clear if successful
+ CF set on error
+ AL = error code
+SeeAlso: AX=0225h/BX=6900h,AX=0225h/BX=6908h
+Index: screen saver;Blank-It
+--------V-110225BX6908-----------------------
+INT 11 - Blank-It Screen Blanker - BLANK THE SCREEN
+ AX = 0225h
+ BX = 6908h
+Return: CF clear if successful
+ CF set on error
+ AL = error code
+SeeAlso: AX=0225h/BX=6900h,AX=0225h/BX=6907h
+Index: screen saver;Blank-It
+--------V-110225BX6909-----------------------
+INT 11 - Blank-It Screen Blanker - SET HOTKEY FOR MANUAL BLANKING
+ AX = 0225h
+ BX = 6909h
+ CL = key scan code (see #00229)
+Return: CF clear if successful
+ CF set on error
+ AL = error code
+Program: Blank-It is a resident screen blanker by Rhode Island Soft Systems,
+ Inc.
+SeeAlso: AX=0225h/BX=6900h
+Index: screen saver;Blank-It|hotkeys;Blank-It
+
+(Table 00229)
+Values for Blank-It hotkey scan code:
+ 00h No hot key
+ 1Dh Left CTRL
+ 2Ah Left Shift
+ 36h Right Shift
+ 57h F11
+ 58h F12
+SeeAlso: #00006
+--------G-1105D7-----------------------------
+INT 11 CU - Borland C++ IDE - INSTALLED CALLOUT
+ AX = 05D7h
+ BX = product ID (0088h)
+Note: called by the BC++ IDE when an application calls
+ INT 12/AX=05D7h/BX=05D7h
+SeeAlso: INT 12/AX=05D7h/BX=05D7h
+Index: installation check;Borland C++ IDE
+--------F-1177-------------------------------
+INT 11 - RainbowFAX v1.3 - SFENGINE API - OPERATIONAL CONTROL
+ AH = 77h
+ AL = subfunction
+ 01h request SFENGINE start
+ Return: AX = 0001h
+ 02h check if SFENGINE started
+ Return: AX = 0000h or 0001h
+ 03h request SFENGINE stop
+ Return: AX = 0001h
+ 04h check if SFENGINE stopped
+ Return: AX = 0000h or 0001h
+ 05h installation check
+ Return: AX = 0001h
+ 06h uninstall???
+ BX:DX -> return address for successful uninstall???
+ Return: (at caller's address)
+ AX = 0000h
+ else
+ Return: AX = FFFFh (invalid subfunction)
+Return: ES:DX -> ASCIZ signature string "SFAX ENGINE V1.0"
+ followed by internal data area???
+SeeAlso: AH=78h,AH=79h,AH=7Ah,AH=7Ch
+Index: installation check;RainbowFAX|installation check;SFENGINE
+Index: uninstall;RainbowFAX|uninstall;SFENGINE
+--------F-1178-------------------------------
+INT 11 - RainbowFAX v1.3 - SFENGINE API - ???
+ AH = 78h
+ AL = subfunction
+ 01h set ???
+ BX = new state for ???
+ 0000h ???
+ else ???
+ Return: AX = 0001h
+ 02h set ???
+ BX = ???
+ CX = ???
+ Return: AX = 0001h
+ 03h set ???
+ BX = new state for ???
+ 0000h ???
+ else ???
+ Return: AX = 0001h
+ else
+ Return: AX = FFFFh (invalid subfunction)
+SeeAlso: AH=77h,AH=79h,AH=7Ah,AH=7Ch
+--------F-1179-------------------------------
+INT 11 - RainbowFAX v1.3 - SFENGINE API - ???
+ AH = 79h
+ AL = subfunction
+ 01h set ??? flag
+ Return: AX = previous state (0000h already set, 0001h clear)
+ 02h clear ??? flag (refer to subfunc 01h)
+ Return: AX = 0001h
+ 03h set ??? flag (different from subfn 02h or 04h)
+ Return: AX = 0001h
+ 04h clear ??? flag (different from subfn 02h or 03h)
+ Return: AX = 0001h
+ else
+ Return: AX = FFFFh (invalid subfunction)
+SeeAlso: AH=77h,AH=78h,AH=7Ah,AH=7Ch
+--------F-117A-------------------------------
+INT 11 - RainbowFAX v1.3 - SFENGINE API - ???
+ AH = 7Ah
+ AL = subfunction
+ 01h set ??? flag
+ Return: AX = previous state (0000h already set, 0001h clear)
+ 02h clear ??? flag
+ Return: AX = 0001h
+ 03h set ??? flag (different from subfn 02h)
+ Return: AX = 0001h
+ else
+ Return: AX = FFFFh (invalid subfunction)
+SeeAlso: AH=77h,AH=78h,AH=79h,AH=7Ch
+--------F-117C01-----------------------------
+INT 11 - RainbowFAX v1.3 - SFENGINE API - SET ??? FLAG
+ AX = 7C01h
+Return: AX = 0001h
+SeeAlso: AH=77h,AH=78h,AH=79h,AH=7Ah,AX=7C02h,AX=7C03h
+--------F-117C02-----------------------------
+INT 11 - RainbowFAX v1.3 - SFENGINE API - CLEAR ??? FLAG
+ AX = 7C02h
+Return: AX = 0001h
+SeeAlso: AH=77h,AH=78h,AH=79h,AH=7Ah,AX=7C01h,AX=7C03h
+--------F-117C03-----------------------------
+INT 11 - RainbowFAX v1.3 - SFENGINE API - UNSUPPORTED FUNCTIONS
+ AX = 7C03h-7CFFh
+Return: AX = FFFFh
+SeeAlso: AH=77h,AX=7C01h,AX=7C02h
+--------S-11BC--DX1954-----------------------
+INT 11 - BNU FOSSIL - INSTALLATION CHECK
+ AH = BCh
+ DX = 1954h
+Return: AX = 1954h
+ ES:DX -> entry point of driver (instead of INT 14)
+SeeAlso: INT 14/AH=04h"FOSSIL"
+--------d-11FF--SI6A6A-----------------------
+INT 11 - WD7000 SDLP interface - EXECUTE GENERIC SCSI COMMAND
+ AH = FFh
+ SI = 6A6Ah
+ AL = SCSI Addressing (see #00230)
+ CX = bytes of data to be transmitted (max FFF0h)
+ DH = 00h
+ DL = length of SCSI Command Descriptor Block
+ DS:DI -> SCSI Command Descriptor Block
+ ES:BX -> data buffer
+Return: CF set on error
+ AL = error code
+ CF clear if successful
+Note: because of busmaster operations with WD7000FASST avoid accessing
+ video memory directly; check 386 memory manager for VDS support.
+ The WD7000XTAT works with programmed IO and does not have this
+ limitation.
+SeeAlso: INT 21/AX=4402h"ASPI",INT 2F/AX=7F01h
+
+Bitfields for SDLP SCSI addressing:
+Bit(s) Description (Table 00230)
+ 2-0 SCSI Target LUN (logical unit number)
+ 5-3 SCSI Target ID
+ 7 write flag, set for write operations, clear otherwise
+--------T-11FFFECXFFFE-----------------------
+INT 11 - BACK&FORTH (before v1.62) API
+ AX = FFFEh
+ CX = FFFEh
+ BX = function
+ 00h installation check
+ Return: AX = installation state
+ 0001h BNFHIGH and BNFLOW both loaded
+ 0003h only BNFHIGH loaded
+ else neither loaded
+ 01h ???
+ Return: DX:AX -> ???
+ 02h ???
+ 03h ???
+ 04h ???
+ 05h ??? switches current PSP segment and stack if BNFLOW has not
+ yet announced itself installed
+ 06h ???
+ Return: AX = ???
+SeeAlso: INT 12/AX=FFFEh
+Index: installation check;BACK&FORTH
+--------B-12---------------------------------
+INT 12 - BIOS - GET MEMORY SIZE
+Return: AX = kilobytes of contiguous memory starting at absolute address 00000h
+Note: this call returns the contents of the word at 0040h:0013h; in PC and
+ XT, this value is set from the switches on the motherboard
+SeeAlso: INT 11"BIOS",INT 2F/AX=4A06h,INT 4C"Tandy 2000",MEM 0040h:0013h
+--------C-12---------------------------------
+INT 12 - CPU-generated (Pentium +) - MACHINE CHECK EXCEPTION
+Notes: Intel documents this interrupt as CPU model-dependent
+ for current Pentium processors, the reason for the machine check
+ exception may be read from model-specific registers 00h and 01h
+ (described, for example, in Christian Ludloff's 4P package)
+ for Pentium Pro/II processors, the reason may be read from the
+ MCG_STATUS MSR (see MSR 0000017Ah)
+ this exception is enabled by bit 6 of CR4
+SeeAlso: INT 11"CPU",MSR 00000000h,MSR 00000001h,MSR 0000017Ah
+--------K-12----CX1806-----------------------
+INT 12 - KEYBUI v2.0+ - INSTALLATION CHECK
+ CX = 1806h
+Return: AX = kilobytes of contiguous memory starting at absolute address 00000h
+ CX = 1960h if installed
+Program: KEYBUI is a resident keyboard driver by Johan Zwiekhorst which allows
+ accented characters and box drawing on standard QWERTY keyboards; it
+ also provides break-to-DOS and screen blanking capabilities
+SeeAlso: INT 14/AX=AA01h
+Index: screen saver;KEYBUI
+--------d-12----CX1807-----------------------
+INT 12 - PARKER v2.0+ - INSTALLATION CHECK
+ CX = 1807h
+Return: AX = kilobytes of contiguous memory starting at absolute address 00000h
+ CX = 1961h if installed
+Program: PARKER is an optionally-resident hard disk parking program by Johan
+ Zwiekhorst
+--------G-1205D7BX05D7-----------------------
+INT 12 U - Borland C++ IDE - INSTALLATION CHECK
+ AX = 05D7h (1495d)
+ BX = 05D7h
+Note: the BC++ IDE will call INT 11/AX=05D7h/BX=0088h if it is loaded
+SeeAlso: INT 11/AX=05D7h
+--------v-124350BX4920-----------------------
+INT 12 C - CPI-standard virus - "FRIEND" CHECK
+ AX = 4350h
+ BX = 4920h
+ CX = AB46h
+ DX = 554Eh
+Return: if friendly (not to be infected)
+ CX:DX -> ASCIZ identity code (changes yearly)
+SeeAlso: INT 13/AX=EC00h"VIRUS",INT 13/AX=5001h,INT 21/AX=0B56h
+--------T-12FFFECXFFFE-----------------------
+INT 12 - Back&Forth v1.62+ - API
+ AX = FFFEh
+ CX = FFFEh
+ BX = function
+ 00h installation check
+ Return: AX = 0001h installed
+ else not loaded
+ 01h (reserved)
+ 02h build program ID list (shareware Back&Forth)
+ ES:DI -> buffer of at least 100 bytes, to be filled with words
+ Return: AX = number of programs defined
+ ES:DI buffer filled with AX words
+ 02h get memory statistics (Back&Forth Professional)
+ Return: AX = available swap memory, KBytes
+ BX = maximum task size, KBytes
+ DX = fixed overhead per task, excluding video/macro
+ storage
+ 03h switch to specified task (task need not be open yet)
+ DX = two-letter program ID
+ Return: AX = status
+ 0000h if task undefined
+ 0001h task switch will occur when safe
+ 04h (reserved)
+ 05h (reserved)
+ 06h get version (documented only for Back&Forth Professional)
+ Return: AX = version * 100 (v1.71 = 00ABh)
+ 07h spawn program (Back&Forth Professional only???)
+ ES:DI -> BF_SPAWN record (see #00232)
+ Return: AX = status
+ 0000h if no task handles free
+ 0001h spawn will occur when safe
+ 08h get open tasks (documented only for Back&Forth Professional)
+ ES:DI -> task info buffer (see #00231,#00233)
+ Return: AX = number of open tasks (max 20)
+ Note: the supplied buffer must be large enough to hold 21
+ task entries
+ 09h (reserved)
+ ---Back&Forth Professional---
+ 0Ah get active clipboard filename
+ Return: DX:AX -> ASCIZ clipboard filename
+ 0Bh get active task number
+ AX = active task number (00h-13h)
+ BX = number of tasks allocated
+ DX = maximum number of tasks
+ 0Ch (reserved)
+ 0Dh (reserved)
+ 0Eh (reserved)
+ 0Fh stuff string into keyboard buffer
+ ES:DI -> ASCIZ string to be stuffed
+ Return: nothing
+ 10h check if in graphics mode
+ Return: AX = state
+ 0000h color text mode
+ 0004h mono text mode
+ FFFFh graphics mode
+ 11h get Back&Forth Professional user number
+ Return: AX = user number (0000h-00FFh)
+ 12h switch task by task number
+ DX = task number
+ Return: AX = status
+ 0000h attempted to switch to active task
+ 0001h task switch will occur when safe
+ FFFFh invalid task number
+ 13h delete (kill) task
+ DX = task number
+ Return: AX = status
+ 0000h attempted to delete the active task
+ 0001h successfully deleted
+ FFFFh invalid task number
+ Note: the active task number will change if the deleted task
+ was lower in the task list than the active task
+ 14h get next available task handle
+ Return: AX = next available task handle
+ FFFFh if task table is full
+Program: Back & Forth is a task switcher by Progressive Solutions, Inc.
+SeeAlso: INT 11/AX=FFFEh
+Index: installation check;BACK&FORTH
+
+Format of Back&Forth task info buffer:
+Offset Size Description (Table 00231)
+ 00h 21 BYTEs ASCIZ task name
+ 15h BYTE hotkey shift state (as for INT 16/AH=02h)
+ 16h WORD hotkey scan code (see also #00006)
+ 18h WORD program ID
+Index: hotkeys;Back&Forth
+SeeAlso: #00232,#00233
+
+Format of Back&Forth Professional BF_SPAWN record:
+Offset Size Description (Table 00232)
+ 00h 21 BYTEs task description
+ 15h BYTE flag: disable hotkeys
+ 16h WORD environment size in bytes
+ 18h BYTE hotkey shift flags
+ 19h WORD hotkey scancode
+ 1Bh WORD maximum number of EMS pages
+ 1Dh WORD required memory in KBytes
+ 1Fh 3 BYTEs DESQview-style two-letter program ID
+ 22h 13 BYTEs base name of program to be run (no path or extension)
+ 2Fh 66 BYTEs directory from which to start program
+ 71h 66 BYTEs initial current directory for program
+SeeAlso: #00231,#00233
+
+Format of Back&Forth Professional BF_TASK record:
+Offset Size Description (Table 00233)
+ 00h DWORD Unix-style task start time (seconds since 1970/1/1)
+ 04h 21 BYTEs task description
+ 19h DWORD elapsed time in task (seconds)
+ 1Dh WORD task ID
+ 1Fh BYTE task hotkey keyboard flags
+ 20h WORD task hotkey scan code (see also #00006)
+ 22h DWORD time task was suspended/exited
+ 26h WORD task handle
+SeeAlso: #00231,#00232
+--------B-1300-------------------------------
+INT 13 - DISK - RESET DISK SYSTEM
+ AH = 00h
+ DL = drive (if bit 7 is set both hard disks and floppy disks reset)
+Return: AH = status (see #00234)
+ CF clear if successful (returned AH=00h)
+ CF set on error
+Note: forces controller to recalibrate drive heads (seek to track 0)
+ for PS/2 35SX, 35LS, 40SX and L40SX, as well as many other systems,
+ both the master drive and the slave drive respond to the Reset
+ function that is issued to either drive
+SeeAlso: AH=0Dh,AH=11h,INT 21/AH=0Dh,INT 4D/AH=00h"TI Professional"
+SeeAlso: INT 56"Tandy 2000",MEM 0040h:003Eh
+--------B-1301-------------------------------
+INT 13 - DISK - GET STATUS OF LAST OPERATION
+ AH = 01h
+ DL = drive (bit 7 set for hard disk)
+Return: CF clear if successful (returned status 00h)
+ CF set on error
+ AH = status of previous operation (see #00234)
+Note: some BIOSes return the status in AL; the PS/2 Model 30/286 returns the
+ status in both AH and AL
+SeeAlso: AH=00h,INT 4D/AH=01h,MEM 0040h:0041h,MEM 0040h:0074h
+
+(Table 00234)
+Values for disk operation status:
+ 00h successful completion
+ 01h invalid function in AH or invalid parameter
+ 02h address mark not found
+ 03h disk write-protected
+ 04h sector not found/read error
+ 05h reset failed (hard disk)
+ 05h data did not verify correctly (TI Professional PC)
+ 06h disk changed (floppy)
+ 07h drive parameter activity failed (hard disk)
+ 08h DMA overrun
+ 09h data boundary error (attempted DMA across 64K boundary or >80h sectors)
+ 0Ah bad sector detected (hard disk)
+ 0Bh bad track detected (hard disk)
+ 0Ch unsupported track or invalid media
+ 0Dh invalid number of sectors on format (PS/2 hard disk)
+ 0Eh control data address mark detected (hard disk)
+ 0Fh DMA arbitration level out of range (hard disk)
+ 10h uncorrectable CRC or ECC error on read
+ 11h data ECC corrected (hard disk)
+ 20h controller failure
+ 31h no media in drive (IBM/MS INT 13 extensions)
+ 32h incorrect drive type stored in CMOS (Compaq)
+ 40h seek failed
+ 80h timeout (not ready)
+ AAh drive not ready (hard disk)
+ B0h volume not locked in drive (INT 13 extensions)
+ B1h volume locked in drive (INT 13 extensions)
+ B2h volume not removable (INT 13 extensions)
+ B3h volume in use (INT 13 extensions)
+ B4h lock count exceeded (INT 13 extensions)
+ B5h valid eject request failed (INT 13 extensions)
+ B6h volume present but read protected (INT 13 extensions)
+ BBh undefined error (hard disk)
+ CCh write fault (hard disk)
+ E0h status register error (hard disk)
+ FFh sense operation failed (hard disk)
+SeeAlso: #M0022
+--------B-1302-------------------------------
+INT 13 - DISK - READ SECTOR(S) INTO MEMORY
+ AH = 02h
+ AL = number of sectors to read (must be nonzero)
+ CH = low eight bits of cylinder number
+ CL = sector number 1-63 (bits 0-5)
+ high two bits of cylinder (bits 6-7, hard disk only)
+ DH = head number
+ DL = drive number (bit 7 set for hard disk)
+ ES:BX -> data buffer
+Return: CF set on error
+ if AH = 11h (corrected ECC error), AL = burst length
+ CF clear if successful
+ AH = status (see #00234)
+ AL = number of sectors transferred (only valid if CF set for some
+ BIOSes)
+Notes: errors on a floppy may be due to the motor failing to spin up quickly
+ enough; the read should be retried at least three times, resetting
+ the disk with AH=00h between attempts
+ most BIOSes support "multitrack" reads, where the value in AL
+ exceeds the number of sectors remaining on the track, in which
+ case any additional sectors are read beginning at sector 1 on
+ the following head in the same cylinder; the MSDOS CONFIG.SYS command
+ MULTITRACK (or the Novell DOS DEBLOCK=) can be used to force DOS to
+ split disk accesses which would wrap across a track boundary into two
+ separate calls
+ the IBM AT BIOS and many other BIOSes use only the low four bits of
+ DH (head number) since the WD-1003 controller which is the standard
+ AT controller (and the controller that IDE emulates) only supports
+ 16 heads
+ AWARD AT BIOS and AMI 386sx BIOS have been extended to handle more
+ than 1024 cylinders by placing bits 10 and 11 of the cylinder number
+ into bits 6 and 7 of DH
+ under Windows95, a volume must be locked (see INT 21/AX=440Dh/CX=084Bh)
+ in order to perform direct accesses such as INT 13h reads and writes
+ all versions of MS-DOS (including MS-DOS 7 [Windows 95]) have a bug
+ which prevents booting on hard disks with 256 heads (FFh), so many
+ modern BIOSes provide mappings with at most 255 (FEh) heads
+ some cache drivers flush their buffers when detecting that DOS is
+ bypassed by directly issuing INT 13h from applications. A dummy
+ read can be used as one of several methods to force cache
+ flushing for unknown caches (e.g. before rebooting).
+BUGS: When reading from floppies, some AMI BIOSes (around 1990-1991) trash
+ the byte following the data buffer, if it is not arranged to an even
+ memory boundary. A workaround is to either make the buffer word
+ aligned (which may also help to speed up things), or to add a dummy
+ byte after the buffer.
+ MS-DOS may leave interrupts disabled on return from this function.
+ Apparently some BIOSes or intercepting resident software have bugs
+ that may destroy DX on return or not properly set the Carry flag.
+ At least some Microsoft software frames calls to this function with
+ PUSH DX, STC, INT 13h, STI, POP DX.
+ on the original IBM AT BIOS (1984/01/10) this function does not disable
+ interrupts for harddisks (DL >= 80h). On these machines the MS-DOS/
+ PC DOS IO.SYS/IBMBIO.COM installs a special filter to bypass the
+ buggy code in the ROM (see CALL F000h:211Eh)
+SeeAlso: AH=03h,AH=0Ah,AH=06h"V10DISK.SYS",AH=21h"PS/1",AH=42h"IBM"
+SeeAlso: INT 21/AX=440Dh/CX=084Bh,INT 4D/AH=02h
+--------B-1303-------------------------------
+INT 13 - DISK - WRITE DISK SECTOR(S)
+ AH = 03h
+ AL = number of sectors to write (must be nonzero)
+ CH = low eight bits of cylinder number
+ CL = sector number 1-63 (bits 0-5)
+ high two bits of cylinder (bits 6-7, hard disk only)
+ DH = head number
+ DL = drive number (bit 7 set for hard disk)
+ ES:BX -> data buffer
+Return: CF set on error
+ CF clear if successful
+ AH = status (see #00234)
+ AL = number of sectors transferred
+ (only valid if CF set for some BIOSes)
+Notes: errors on a floppy may be due to the motor failing to spin up quickly
+ enough; the write should be retried at least three times, resetting
+ the disk with AH=00h between attempts
+ most BIOSes support "multitrack" writes, where the value in AL
+ exceeds the number of sectors remaining on the track, in which
+ case any additional sectors are written beginning at sector 1 on
+ the following head in the same cylinder; the CONFIG.SYS command
+ MULTITRACK can be used to force DOS to split disk accesses which
+ would wrap across a track boundary into two separate calls
+ the IBM AT BIOS and many other BIOSes use only the low four bits of
+ DH (head number) since the WD-1003 controller which is the standard
+ AT controller (and the controller that IDE emulates) only supports
+ 16 heads
+ AWARD AT BIOS and AMI 386sx BIOS have been extended to handle more
+ than 1024 cylinders by placing bits 10 and 11 of the cylinder number
+ into bits 6 and 7 of DH
+ under Windows95, an application must issue a physical volume lock on
+ the drive via INT 21/AX=440Dh before it can successfully write to
+ the disk with this function
+SeeAlso: AH=02h,AH=0Bh,AH=07h"V10DISK.SYS",AH=22h"PS/1",AH=43h"IBM"
+SeeAlso: INT 21/AX=440Dh"DOS 3.2+",INT 4D/AH=03h
+--------B-1304-------------------------------
+INT 13 - DISK - VERIFY DISK SECTOR(S)
+ AH = 04h
+ AL = number of sectors to verify (must be nonzero)
+ CH = low eight bits of cylinder number
+ CL = sector number 1-63 (bits 0-5)
+ high two bits of cylinder (bits 6-7, hard disk only)
+ DH = head number
+ DL = drive number (bit 7 set for hard disk)
+ ES:BX -> data buffer (PC,XT,AT with BIOS prior to 1985/11/15)
+Return: CF set on error
+ CF clear if successful
+ AH = status (see #00234)
+ AL = number of sectors verified
+Notes: errors on a floppy may be due to the motor failing to spin up quickly
+ enough (timeout error 80h); the write should be retried at least
+ three times, resetting the disk with AH=00h between attempts
+ on floppys, the operation should also be retried on media change
+ (06h) detection.
+ this function does not compare the disk with memory, it merely
+ checks whether the sector's stored CRC matches the data's actual CRC
+ the IBM AT BIOS and many other BIOSes use only the low four bits of
+ DH (head number) since the WD-1003 controller which is the standard
+ AT controller (and the controller that IDE emulates) only supports
+ 16 heads
+ AWARD AT BIOS and AMI 386sx BIOS have been extended to handle more
+ than 1024 cylinders by placing bits 10 and 11 of the cylinder number
+ into bits 6 and 7 of DH
+BUG: some Epson ROM BIOSes sometimes have problems properly handling this
+ function. The workaround is to reset the disk (INT 13/AH=00h) before
+ the call.
+SeeAlso: AH=02h,AH=44h,INT 4D/AH=04h,INT 4D/AH=06h
+--------B-1305-------------------------------
+INT 13 - FLOPPY - FORMAT TRACK
+ AH = 05h
+ AL = number of sectors to format
+ CH = track number
+ DH = head number
+ DL = drive number
+ ES:BX -> address field buffer (see #00235)
+Return: CF set on error
+ CF clear if successful
+ AH = status (see #00234)
+Notes: on AT or higher, call AH=17h first
+ the number of sectors per track is read from the diskette parameter
+ table pointed at by INT 1E
+BUG: some old Compaq BIOSes have a bug when attempting to call this function
+ from Windows Standard Mode with EMM386 loaded. A possible workaround
+ is to call this function from Real Mode e.g. through DPMI function
+ "Call Real Mode function with FAR return" (see INT 31/AX=0301h).
+SeeAlso: AH=05h"FIXED",AH=17h,AH=18h,INT 1E
+
+Format of floppy format address field buffer entry (one per sector in track):
+Offset Size Description (Table 00235)
+ 00h BYTE track number
+ 01h BYTE head number (0-based)
+ 02h BYTE sector number
+ 03h BYTE sector size (00h=128 bytes, 01h=256 bytes, 02h=512, 03h=1024)
+--------B-1305-------------------------------
+INT 13 - FIXED DISK - FORMAT TRACK
+ AH = 05h
+ AL = interleave value (XT-type controllers only)
+ ES:BX -> 512-byte format buffer
+ the first 2*(sectors/track) bytes contain F,N for each sector
+ F = sector type
+ 00h for good sector
+ 20h to unassign from alternate location
+ 40h to assign to alternate location
+ 80h for bad sector
+ N = sector number
+ CH = cylinder number (bits 8,9 in high bits of CL)
+ CL = high bits of cylinder number (bits 7,6)
+ DH = head
+ DL = drive
+Return: CF set on error
+ CF clear if successful
+ AH = status code (see #00234)
+Notes: AWARD AT BIOS and AMI 386sx BIOS have been extended to handle more
+ than 1024 cylinders by placing bits 10 and 11 of the cylinder number
+ into bits 6 and 7 of DH
+ for XT-type controllers on an AT or higher, AH=0Fh should be called
+ first
+ the IBM AT BIOS and many other BIOSes use only the low four bits of
+ DH (head number) since the WD-1003 controller which is the standard
+ AT controller (and the controller that IDE emulates) only supports
+ 16 heads
+ not all controller support sector types 20h and 40h
+ under Windows95, an application must issue a physical volume lock on
+ the drive via INT 21/AX=440Dh before it can successfully write to
+ the disk with this function
+SeeAlso: AH=05h"FLOPPY",AH=06h"FIXED",AH=07h"FIXED",AH=0Fh,AH=18h,AH=1Ah
+--------d-1305-------------------------------
+INT 13 - Future Domain SCSI BIOS - SEND SCSI MODE SELECT COMMAND
+ AH = 05h
+ DL = hard drive ID
+ ES:BX -> mode select data (see #00236)
+Return: CF set on error
+ CF clear if successful
+ AH = status code (see #00234)
+Notes: this function can be called before AH=07h"SCSI" or AH=06h"SCSI" to
+ format a SCSI disk with the desired parameters
+ the mode select data below is from the SCSI-1 specification
+ the TMC-950 does not support any Future Domain BIOS calls; instead,
+ it provides a full CAM implementation (see INT 4F/AX=8100h)
+SeeAlso: AH=06h"SCSI",AH=07h"SCSI",INT 4F/AX=8100h
+
+Format of Future Domain SCSI mode select data:
+Offset Size Description (Table 00236)
+ 00h BYTE number of bytes of remaining data (12 + vendor unique length)
+ 01h BYTE reserved (0)
+ 02h BYTE medium type (0 for hard disk)
+ 03h BYTE reserved (0)
+ 04h BYTE block descriptor length (8)
+ 05h BYTE density code (0 for hard disk)
+ 06h 3 BYTEs (big-endian) number of blocks (000000h for entire disk)
+ 09h BYTE reserved (0)
+ 0Ah 3 BYTEs (big-endian) block length (512 standard, or 256)
+ 0Dh ??? vendor-specific parameter bytes (optional)
+--------d-13057FSI324D-----------------------
+INT 13 - 2M - FORMAT TRACK
+ AX = 057Fh
+ SI = 324Dh ("2M")
+ CH = track number
+ DH = head number
+ DL = drive number
+ ES:BX -> boot sector of future 2M diskette
+Return: CF set on error
+ CF clear if successful
+ AH = status (see #00234)
+Program: 2M is a TSR developed by Ciriaco Garc¡a de Celis to support
+ non standard diskettes with 820-902/1476-1558K (5.25 DD/HD)
+ and 984-1066/1804-1886K/3608-3772K (3.5 DD/HD/ED)
+InstallCheck: must search for a "CiriSOFT:2M:1.3" or "CiriSOFT:2MX:3.0" or
+ similar (recomended ":2M:", ":2MX:", or ":2MB:" substrings) in the
+ CiriSOFT TSR interface
+Notes: it is not necessary to call AH=17h or AH=18h first (will be ignored)
+ the diskette format must always begin on cylinder 0 head 0
+ the boot sector can be obtained from an already-formatted 2M diskette
+ (by calling AH=02h with head number 00h in 2M v1.x and with head
+ number 80h for 2M v2+)
+ since 2M v2.0, the BOOT sector is emulated using the first physical
+ sector of FAT2; the second-sixth physical sectors of FAT2 in HD or ED
+ diskettes store the SuperBOOT code. To skip the FAT2 emulation (using
+ FAT1) of 2M, in order to read the SuperBOOT code, head number must be
+ 80h-81h instead 0-1 (bit 7 active) in standard read/write functions.
+ This lets diskcopy programs format 2M target diskettes copying
+ SuperBOOT code. If the target diskette is already 2MF formatted
+ (containing boot code) this trick it is not necessary.
+ when using STV technology (offset 65 of boot sector equal to 1) it is
+ necessary to write the full track before formatting (except track 0
+ side 0) to complete the format and skip future CRC errors on read; in
+ track 0 side 1 the head used must be 81h instead 1. Diskcopy programs
+ may do a format-write-verify sequential phases to improve performance
+SeeAlso: AH=05h"FLOPPY",AH=18h/CX=5055h,INT 2F"CiriSOFT"
+--------B-1306-------------------------------
+INT 13 - FIXED DISK - FORMAT TRACK AND SET BAD SECTOR FLAGS (XT,PORT)
+ AH = 06h
+ AL = interleave value
+ CH = cylinder number (bits 8,9 in high bits of CL)
+ CL = sector number
+ DH = head
+ DL = drive
+Return: AH = status code (see #00234)
+Note: AWARD AT BIOS and AMI 386sx BIOS have been extended to handle more
+ than 1024 cylinders by placing bits 10 and 11 of the cylinder number
+ into bits 6 and 7 of DH
+SeeAlso: AH=05h"FIXED",AH=07h"FIXED"
+--------d-1306-------------------------------
+INT 13 - Future Domain SCSI BIOS - FORMAT DRIVE WITH BAD SECTOR MAPPING
+ AH = 06h
+ AL = interleave
+ (0 = default, 1 = consecutive sectors, 2 - 255 = vendor unique)
+ DL = hard drive ID
+ DH = defect list info (see #00237)
+ ES:BX -> defect table A, B or C (see #00238,#00239,#00240)
+Return: CF set on error
+ CF clear if successful
+ AH = status code (see #00234)
+Notes: block addresses must be in ascending order (for table B, cylinder is
+ most significant, byte from index least significant; for table C,
+ cylinder is most significant, sector number least significant)
+ table B defect bytes from index of FFFFFFFFh indicates that the entire
+ track shall be reassigned
+ table C defect sector number of FFFFFFFFh indicates that the entire
+ track shall be reassigned
+ the TMC-950 does not support any Future Domain BIOS calls; instead,
+ it provides a full CAM implementation (see INT 4F/AX=8100h)
+SeeAlso: AH=05h"SCSI",AH=06h"FIXED",AH=07h"SCSI"
+
+Bitfields for Future Domain SCSI defect list info:
+Bit(s) Description (Table 00237)
+ 7-5 drive LUN
+ 4 defect list is available
+ 3 defect list is complete (erase drive's defect list)
+ 2-0 defect table format
+ (000=use defect table A, 100=use defect table B,
+ 101=use defect table C)
+
+Format of Future Domain SCSI defect table A:
+Offset Size Description (Table 00238)
+ 00h WORD number of bytes remaining in table
+ 02h BYTE reserved (0)
+ 03h BYTE reserved (0)
+ 04h WORD (big-endian) defect list length (4*number of defects)
+ 06h 4 DWORDs (big-endian) defect block addresses
+
+Format of Future Domain SCSI defect table B:
+Offset Size Description (Table 00239)
+ 00h WORD number of bytes remaining in table
+ 02h BYTE reserved (0)
+ 03h BYTE reserved (0)
+ 04h WORD (big-endian) defect list length (8*number of defects)
+ 06h 8N BYTEs defect list [array] (see #00241)
+
+Format of Future Domain SCSI defect table C:
+Offset Size Description (Table 00240)
+ 00h WORD number of bytes remaining in table
+ 02h BYTE reserved (0)
+ 03h BYTE reserved (0)
+ 04h WORD (big-endian) defect list length (8*number of defects)
+ 06h 8N BYTEs defect list [array] (see #00241)
+
+Format of Future Domain SCSI defect list entry:
+Offset Size Description (Table 00241)
+ 00h 3 BYTEs (big-endian) cylinder number of defect
+ 03h BYTE head number of defect
+ 04h DWORD (big-endian) defect bytes from index
+--------d-1306-------------------------------
+INT 13 - Adaptec AHA-154xA/Bustek BT-542 BIOS - IDENTIFY SCSI DEVICES
+ AH = 06h
+Return: AH = status code (see #00234)
+ CF clear if successful
+ AL = first drive supported
+ (80h nonconcurrent operation, 81h concurrent operation)
+ CF set on error
+Desc: determine the number of the first supported SCSI drive
+Note: the return value is 80h when two SCSI drives are supported, 81h if
+ only one SCSI drive is installed
+SeeAlso: AH=08h"PC",#00732 at INT 1A/AX=B102h
+--------d-1306-------------------------------
+INT 13 - V10DISK.SYS - READ DELETED SECTORS
+ AH = 06h
+ AL = number of sectors
+ CH = cylinder number (bits 8,9 in high bits of CL)
+ CL = sector number
+ DH = head
+ DL = drive
+ ES:BX -> buffer
+Return: AH = status code (see #00234)
+Program: V10DISK.SYS is a driver for the Flagstaff Engineering 8" floppies
+SeeAlso: AH=02h,AH=07h"V10DISK.SYS"
+--------B-1307-------------------------------
+INT 13 - FIXED DISK - FORMAT DRIVE STARTING AT GIVEN TRACK (XT,PORT)
+ AH = 07h
+ AL = interleave value (XT only)
+ ES:BX = 512-byte format buffer (see AH=05h)
+ CH = cylinder number (bits 8,9 in high bits of CL)
+ CL = sector number
+ DH = head
+ DL = drive
+Return: AH = status code (see #00234)
+Note: AWARD AT BIOS and AMI 386sx BIOS have been extended to handle more
+ than 1024 cylinders by placing bits 10 and 11 of the cylinder number
+ into bits 6 and 7 of DH
+SeeAlso: AH=05h"FIXED",AH=06h"FIXED",AH=1Ah
+--------d-1307-------------------------------
+INT 13 - Future Domain SCSI BIOS - FORMAT DRIVE
+ AH = 07h
+ AL = interleave (0 = default, 1 = consecutive sectors,
+ 2 - 255 = vendor unique)
+ DL = hard drive ID
+Return: CF set on error
+ CF clear if successful
+ AH = status code (see #00234)
+SeeAlso: AH=05h"SCSI",AH=06h"SCSI",AH=07h"FIXED"
+--------d-1307-------------------------------
+INT 13 - V10DISK.SYS - WRITE DELETED SECTORS
+ AH = 07h
+ AL = number of sectors
+ CH = cylinder number (bits 8,9 in high bits of CL)
+ CL = sector number
+ DH = head
+ DL = drive
+ ES:BX -> buffer
+Return: AH = status code (see #00234)
+Program: V10DISK.SYS is a driver for the Flagstaff Engineering 8" floppies
+SeeAlso: AH=03h,AH=06h"V10DISK.SYS"
+--------B-1308-------------------------------
+INT 13 - DISK - GET DRIVE PARAMETERS (PC,XT286,CONV,PS,ESDI,SCSI)
+ AH = 08h
+ DL = drive (bit 7 set for hard disk)
+ ES:DI = 0000h:0000h to guard against BIOS bugs
+Return: CF set on error
+ AH = status (07h) (see #00234)
+ CF clear if successful
+ AH = 00h
+ AL = 00h on at least some BIOSes
+ BL = drive type (AT/PS2 floppies only) (see #00242)
+ CH = low eight bits of maximum cylinder number
+ CL = maximum sector number (bits 5-0)
+ high two bits of maximum cylinder number (bits 7-6)
+ DH = maximum head number
+ DL = number of drives
+ ES:DI -> drive parameter table (floppies only)
+Notes: may return successful even though specified drive is greater than the
+ number of attached drives of that type (floppy/hard); check DL to
+ ensure validity
+ for systems predating the IBM AT, this call is only valid for hard
+ disks, as it is implemented by the hard disk BIOS rather than the
+ ROM BIOS
+ the IBM ROM-BIOS returns the total number of hard disks attached
+ to the system regardless of whether DL >= 80h on entry.
+ Toshiba laptops with HardRAM return DL=02h when called with DL=80h,
+ but fail on DL=81h. The BIOS data at 40h:75h correctly reports 01h.
+ may indicate only two drives present even if more are attached; to
+ ensure a correct count, one can use AH=15h to scan through possible
+ drives
+ Reportedly some Compaq BIOSes with more than one hard disk controller
+ return only the number of drives DL attached to the corresponding
+ controller as specified by the DL value on entry. However, on
+ Compaq machines with "COMPAQ" signature at F000h:FFEAh,
+ MS-DOS/PC DOS IO.SYS/IBMBIO.COM call INT 15/AX=E400h and
+ INT 15/AX=E480h to enable Compaq "mode 2" before retrieving the count
+ of hard disks installed in the system (DL) from this function.
+ the maximum cylinder number reported in CX is usually two less than
+ the total cylinder count reported in the fixed disk parameter table
+ (see INT 41h,INT 46h) because early hard disks used the last cylinder
+ for testing purposes; however, on some Zenith machines, the maximum
+ cylinder number reportedly is three less than the count in the fixed
+ disk parameter table.
+ for BIOSes which reserve the last cylinder for testing purposes, the
+ cylinder count is automatically decremented
+ on PS/1s with IBM ROM DOS 4, nonexistent drives return CF clear,
+ BX=CX=0000h, and ES:DI = 0000h:0000h
+ machines with lost CMOS memory may return invalid data for floppy
+ drives. In this situation CF is cleared, but AX,BX,CX,DX,DH,DI,
+ and ES contain only 0. At least under some circumstances, MS-DOS/
+ PC DOS IO.SYS/IBMBIO.COM just assumes a 360 KB floppy if it sees
+ CH to be zero for a floppy.
+ the PC-Tools PCFORMAT program requires that AL=00h before it will
+ proceed with the formatting
+ if this function fails, an alternative way to retrieve the number
+ of floppy drives installed in the system is to call INT 11h.
+ In fact, the MS-DOS/PC-DOS IO.SYS/IBMBIO.COM attempts to get the
+ number of floppy drives installed from INT 13/AH=08h, when INT 11h
+ AX bit 0 indicates there are no floppy drives installed. In addition
+ to testing the CF flag, it only trusts the result when the number of
+ sectors (CL preset to zero) is non-zero after the call.
+BUGS: several different Compaq BIOSes incorrectly report high-numbered
+ drives (such as 90h, B0h, D0h, and F0h) as present, giving them the
+ same geometry as drive 80h; as a workaround, scan through disk
+ numbers, stopping as soon as the number of valid drives encountered
+ equals the value in 0040h:0075h
+ a bug in Leading Edge 8088 BIOS 3.10 causes the DI,SI,BP,DS, and ES
+ registers to be destroyed
+ some Toshiba BIOSes (at least before 1995, maybe some laptops???
+ with 1.44 MB floppies) have a bug where they do not set the ES:DI
+ vector even for floppy drives. Hence these registers should be
+ preset with zero before the call and checked to be non-zero on
+ return before using them. Also it seems these BIOSes can return
+ wrong info in BL and CX, as S/DOS 1.0 can be configured to preset
+ these registers as for an 1.44 MB floppy.
+ the PS/2 Model 30 fails to reset the bus after INT 13/AH=08h and
+ INT 13/AH=15h. A workaround is to monitor for these functions
+ and perform a transparent INT 13/AH=01h status read afterwards.
+ This will reset the bus. The MS-DOS 6.0 IO.SYS takes care of
+ this by installing a special INT 13h interceptor for this purpose.
+ AD-DOS may leave interrupts disabled on return from this function.
+ Some Microsoft software explicitly sets STI after return.
+SeeAlso: AH=06h"Adaptec",AH=13h"SyQuest",AH=48h,AH=15h,INT 1E
+SeeAlso: INT 41"HARD DISK 0"
+
+(Table 00242)
+Values for diskette drive type:
+ 01h 360K
+ 02h 1.2M
+ 03h 720K
+ 04h 1.44M
+ 05h ??? (reportedly an obscure drive type shipped on some IBM machines)
+ 2.88M on some machines (at least AMI 486 BIOS)
+ 06h 2.88M
+ 10h ATAPI Removable Media Device
+--------d-1308-------------------------------
+INT 13 - V10DISK.SYS - SET FORMAT
+ AH = 08h
+ AL = number of sectors
+ CH = cylinder number (bits 8,9 in high bits of CL)
+ CL = sector number
+ DH = head
+ DL = drive
+Return: AH = status code (see #00234)
+Program: V10DISK.SYS is a driver for the Flagstaff Engineering 8" floppies
+Note: details not available
+SeeAlso: AH=03h,AH=06h"V10DISK.SYS"
+--------y-130800DLF0-------------------------
+INT 13 - SecureDrive - INSTALLATION CHECK
+ AX = 08000h
+ DL = F0h
+Return: AX = EDCBh for version 1.0-1.2
+ AX = EDCCh for version 1.3
+ CX = code segment
+ DX = data address within code segment
+Program: SecureDrive by Mike Ingle <mikeingle@delphi.com> allows you to create
+ an encrypted partition on your harddisk.
+--------B-1309-------------------------------
+INT 13 - HARD DISK - INITIALIZE CONTROLLER WITH DRIVE PARAMETERS (AT,PS)
+ AH = 09h
+ DL = drive (80h for first, 81h for second)
+Return: CF clear if successful
+ CF set on error
+ AH = status (see #00234)
+Notes: on the PC and XT, this function uses the parameter table pointed at by
+ INT 41
+ on the AT and later, this function uses the parameter table pointed at
+ by INT 41 if DL=80h, and the parameter table pointed at by INT 46 if
+ DL=81h
+SeeAlso: INT 41"HARD DISK 0",INT 46"HARD DISK 1"
+--------B-130A-------------------------------
+INT 13 - HARD DISK - READ LONG SECTOR(S) (AT and later)
+ AH = 0Ah
+ AL = number of sectors (01h may be only value supported)
+ CH = low eight bits of cylinder number
+ CL = sector number (bits 5-0)
+ high two bits of cylinder number (bits 7-6)
+ DH = head number
+ DL = drive number (80h = first, 81h = second)
+ ES:BX -> data buffer
+Return: CF clear if successful
+ CF set on error
+ AH = status (see #00234)
+ AL = number of sectors transferred
+Notes: this function reads in four to seven bytes of error-correcting code
+ along with each sector's worth of information
+ data errors are not automatically corrected, and the read is aborted
+ after the first sector with an ECC error
+ used for diagnostics only on PS/2 systems; IBM officially classifies
+ this function as optional
+BUG: on the original IBM AT BIOS (1984/01/10) this function does not disable
+ interrupts for harddisks (DL >= 80h). On these machines the MS-DOS/
+ PC DOS IO.SYS/IBMBIO.COM installs a special filter to bypass the
+ buggy code in the ROM (see CALL F000h:211Eh)
+SeeAlso: AH=02h,AH=0Bh,MEM 0040h:0074h
+--------B-130B-------------------------------
+INT 13 - HARD DISK - WRITE LONG SECTOR(S) (AT and later)
+ AH = 0Bh
+ AL = number of sectors (01h may be only value supported)
+ CH = low eight bits of cylinder number
+ CL = sector number (bits 5-0)
+ high two bits of cylinder number (bits 7-6)
+ DH = head number
+ DL = drive number (80h = first, 81h = second)
+ ES:BX -> data buffer
+Return: CF clear if successful
+ CF set on error
+ AH = status (see #00234)
+ AL = number of sectors transferred
+Notes: each sector's worth of data must be followed by four to seven bytes of
+ error-correction information
+ used for diagnostics only on PS/2 systems; IBM officially classifies
+ this function as optional
+SeeAlso: AH=03h,AH=0Ah,MEM 0040h:0074h
+--------B-130C-------------------------------
+INT 13 - HARD DISK - SEEK TO CYLINDER
+ AH = 0Ch
+ CH = low eight bits of cylinder number
+ CL = sector number (bits 5-0)
+ high two bits of cylinder number (bits 7-6)
+ DH = head number
+ DL = drive number (80h = first, 81h = second hard disk)
+Return: CF set on error
+ CF clear if successful
+ AH = status (see #00234)
+SeeAlso: AH=00h,AH=02h,AH=0Ah,AH=47h
+--------B-130D-------------------------------
+INT 13 - HARD DISK - RESET HARD DISKS
+ AH = 0Dh
+ DL = drive number (80h = first, 81h = second hard disk)
+Return: CF set on error
+ CF clear if successful
+ AH = status (see #00234)
+Notes: reinitializes the hard disk controller, resets the specified drive's
+ parameters, and recalibrates the drive's heads (seek to track 0)
+ for PS/2 35SX, 35LS, 40SX and L40SX, as well as many other systems,
+ both the master drive and the slave drive respond to the Reset
+ function that is issued to either drive
+ not for PS/2 ESDI drives
+SeeAlso: AH=00h,INT 21/AH=0Dh
+--------B-130E-------------------------------
+INT 13 - HARD DISK - READ SECTOR BUFFER (XT only)
+ AH = 0Eh
+ DL = drive number (80h = first, 81h = second hard disk)
+ ES:BX -> buffer
+Return: CF set on error
+ CF clear if successful
+ AH = status code (see #00234)
+Notes: transfers controller's sector buffer. No data is read from the drive
+ used for diagnostics only on PS/2 systems
+SeeAlso: AH=0Ah
+--------B-130F-------------------------------
+INT 13 - HARD DISK - WRITE SECTOR BUFFER (XT only)
+ AH = 0Fh
+ DL = drive number (80h = first, 81h = second hard disk)
+ ES:BX -> buffer
+Return: CF set on error
+ CF clear if successful
+ AH = status code (see #00234)
+Notes: does not write data to the drive
+ should be called before formatting to initialize an XT-type
+ controller's sector buffer
+ used for diagnostics only on PS/2 systems
+SeeAlso: AH=0Bh
+--------B-1310-------------------------------
+INT 13 - HARD DISK - CHECK IF DRIVE READY
+ AH = 10h
+ DL = drive number (80h = first, 81h = second hard disk)
+Return: CF set on error
+ CF clear if successful
+ AH = status (see #00234 at AH=01h)
+SeeAlso: AH=11h
+--------B-1311-------------------------------
+INT 13 - HARD DISK - RECALIBRATE DRIVE
+ AH = 11h
+ DL = drive number (80h = first, 81h = second hard disk)
+Return: CF set on error
+ CF clear if successful
+ AH = status (see #00234 at AH=01h)
+Note: causes hard disk controller to seek the specified drive to cylinder 0
+SeeAlso: AH=00h,AH=0Ch,AH=10h,AH=19h"FIXED DISK",MEM 0040h:003Eh
+--------B-1312-------------------------------
+INT 13 - HARD DISK - CONTROLLER RAM DIAGNOSTIC (XT,PS)
+ AH = 12h
+ DL = drive number (80h = first, 81h = second hard disk)
+Return: CF set on error
+ CF clear if successful
+ AH = status code (see #00234 at AH=01h)
+ AL = 00h
+SeeAlso: AH=13h,AH=14h
+--------d-1312-------------------------------
+INT 13 - Future Domain SCSI CONTROLLER - STOP SCSI DISK
+ AH = 12h
+ DL = hard drive ID
+Return: CF set on error
+ CF clear if successful
+ AH = status code (see #00234 at AH=01h)
+Notes: available at least on the TMC-870 8-bit SCSI controller BIOS v6.0A
+ if the given drive is a SCSI device, the SCSI Stop Unit command is sent
+ and either "Disk prepared for shipping" or "Disk Stop command failed"
+ is displayed
+ the TMC-950 does not support any Future Domain BIOS calls; instead,
+ it provides a full CAM implementation (see INT 4F/AX=8100h)
+--------d-1312-------------------------------
+INT 13 - SyQuest - START/STOP SCSI DISK
+ AH = 12h
+ AL = subfunction
+ 00h start disk
+ 01h stop disk
+ CX = wait flag
+ 00h wait for ready
+ 01h don't wait for ready
+ DL = hard drive ID (bit 7 for hard disks must be set)
+Return: CF set on error
+ CF clear if successful
+ AH = status
+ 00h successful
+ 01h invalid function request
+ 80h timeout
+SeeAlso: AH=12h"Future Domain",AH=13h"SyQuest"
+--------B-1313-------------------------------
+INT 13 - HARD DISK - DRIVE DIAGNOSTIC (XT,PS)
+ AH = 13h
+ DL = drive number (80h = first, 81h = second hard disk)
+Return: CF set on error
+ CF clear if successful
+ AH = status code (see #00234 at AH=01h)
+ AL = 00h
+SeeAlso: AH=12h"HARD DISK",AH=14h"HARD DISK"
+--------d-1313-------------------------------
+INT 13 - SyQuest - READ DRIVE PARAMATERS (for DOS 5+)
+ AH = 13h
+ DL = drive ID (bit 7 set for hard disks)
+Return: CF set on error
+ AH = status (07h) (see #00234 at AH=01h)
+ CF clear if successful
+ AH = 00h
+ BL = drive type (AT/PS2 floppies only) (see #00242)
+ CH = low eight bits of maximum cylinder number
+ CL = maximum sector number (bits 5-0)
+ high two bits of maximum cylinder number (bits 7-6)
+ DH = maximum head number
+ DL = number of drives
+ ES:DI -> drive parameter table (floppies only)
+Notes: the return values are identical to the standard INT 13/AH=08h, but the
+ number of drives is not limited to 2, so
+ scanning all possible drive numbers with the Read DASD Type call
+ (AH=15h) should generally be preferred to determine the number of
+ drives attached to the system.
+SeeAlso: AH=08h"PC",AH=12h"SyQuest",AH=15h,AH=59h"SyQuest"
+--------B-1314-------------------------------
+INT 13 - HARD DISK - CONTROLLER INTERNAL DIAGNOSTIC
+ AH = 14h
+Return: CF set on error
+ CF clear if successful
+ AH = status code (see #00234 at AH=01h)
+ AL = 00h
+SeeAlso: AH=12h,AH=13h
+--------B-1315-------------------------------
+INT 13 - DISK - GET DISK TYPE (XT 1986/1/10 or later,XT286,AT,PS)
+ AH = 15h
+ DL = drive number (bit 7 set for hard disk)
+ (AL = FFh, CX = FFFFh, see Note)
+Return: CF clear if successful
+ AH = type code
+ 00h no such drive
+ (SpeedStor) AL = 03h hard disk
+ CX:DX = number of 512-byte sectors
+ 01h floppy without change-line support
+ 02h floppy (or other removable drive) with change-line support
+ 03h hard disk
+ CX:DX = number of 512-byte sectors
+ CF set on error
+ AH = status (see #00234 at AH=01h)
+Note: SyQuest can report type 01h or 02h for 'hard disks', since its media
+ is removable
+BUGS: many versions of the Award 486 BIOS do not return the sector count
+ because the BIOS exit code restores CX and DX to their original
+ values after the function had already set them to correct values
+ Some releases of PC Tools REBUILD preset CX=FFFFh and only trust the
+ results if CH <= 2 on return (which would cut off drives > 16 Gb).
+ several different Compaq BIOSes incorrectly report high-numbered
+ drives (such as 90h, B0h, D0h, and F0h) as present, giving them the
+ same geometry as drive 80h; as a workaround, scan through disk
+ numbers, stopping as soon as the number of valid drives encountered
+ equals the value in 0040h:0075h
+ the PS/2 Model 30 fails to reset the bus after INT 13/AH=08h and
+ INT 13/AH=15h. A workaround is to monitor for these functions
+ and perform a transparent INT 13/AH=01h status read afterwards.
+ This will reset the bus. The MS-DOS 6.0 IO.SYS takes care of
+ this by installing a special INT 13h interceptor for this purpose.
+ Some releases of SpeedStor have a bug where it reports AX=0003h instead
+ of correctly reporting AH=03h for hard disks. A possible workaround
+ when testing for hard disks is to check for AH=03h and AX=0003h.
+ In this case this function should be invoked with a bogus fixed
+ value in AL, e.g. AL=FFh.
+SeeAlso: AH=08h,AH=16h,AH=17h,AH=19h"SCSI",MEM 0040h:0075h
+--------B-1316-------------------------------
+INT 13 - FLOPPY DISK - DETECT DISK CHANGE (XT 1986/1/10 or later,XT286,AT,PS)
+ AH = 16h
+ DL = drive number (00h-7Fh)
+ SI = 0000h (to avoid crash on AT&T 6300)
+Return: CF clear if change line inactive
+ AH = 00h (disk not changed)
+ CF set if change line active
+ AH = status
+ 01h invalid command (SyQuest)
+ 06h change line active or not supported
+ 80h drive not ready or not present
+Notes: call AH=15h first to determine whether the drive supports a change
+ line
+ this call also clears the media-change status, so that a disk change
+ is only reported once
+BUGS: some versions of Award 386 Modular BIOS and AMI BIOS fail to clear
+ the media-change status
+ AT&T 6300 WGS systems crash if SI <> 0 on entry.
+ some pre 1986/08/04 Compaq ROM BIOS have a serious bug where this
+ function may re-configure a hard disk depending on what is located
+ at ES:[BX] and data indexed to by it. MS-DOS/PC DOS IO.SYS/IBMBIO.COM
+ install a special filter when they detect Compaq ROM BIOSes with
+ earlier dates.
+ some Compaq 286 systems have a bug in all INT 13h functions >= 16h,
+ which causes the byte at DS:0074h to be destroyed when called for
+ hard disks (DL >= 80h). MS-DOS/PC DOS IO.SYS/IBMBIO.COM performs a
+ test on this bug using this sub-function, and if found installs a
+ special filter which points DS into ROM, so that it cannot cause
+ any harm.
+ some drives (or controllers???) forget the change line status
+ if another drive is accessed afterwards. The DOS BIOS takes care
+ of this by not relying on the reported change line status when
+ the change line is not active and a different drive is accessed,
+ instead it reports "don't know" to the DOS kernel.
+SeeAlso: AH=15h,AH=49h
+--------B-1317-------------------------------
+INT 13 - FLOPPY DISK - SET DISK TYPE FOR FORMAT (AT,PS)
+ AH = 17h
+ AL = format type
+ 01h = 320/360K disk in 360K drive
+ 02h = 320/360K disk in 1.2M drive
+ 03h = 1.2M disk in 1.2M drive
+ 04h = 720K disk in 720K or 1.44M drive
+ DL = drive number
+Return: CF set on error
+ CF clear if successful
+ AH = status (see #00234 at AH=01h)
+Note: this function does not handle 1.44M drives; use AH=18h instead
+SeeAlso: AH=15h,AH=18h
+--------d-131700-----------------------------
+INT 13 - Future Domain SCSI CONTROLLER - GET INQUIRY INFO FROM SCSI DEVICE
+ AX = 1700h
+ CL = length of buffer
+ DL = hard drive ID
+ ES:BX -> buffer for info (see #00243)
+Return: CF clear if successful
+ CH = number of bytes returned in buffer???
+ CF set on error
+ AH = status code (see #00234 at AH=01h)
+Notes: this function is not available with 8-bit controller ROM versions < 7.0
+ information block bytes 5-n are vendor-specific in older SCSI devices
+ the TMC-950 does not support any Future Domain BIOS calls; instead,
+ it provides a full CAM implementation (see INT 4F/AX=8100h)
+SeeAlso: AH=18h"SCSI",AH=1Bh"SCSI"
+
+Format of Future Domain SCSI inquiry information block:
+Offset Size Description (Table 00243)
+ 00h BYTE device type
+ bits 0-4: peripheral device type (see #00244)
+ bits 5-7: peripheral qualifier (see #00245)
+ 01h BYTE device type modifier
+ bits 0-6: device type modifier
+ bit 7: removable medium
+ 02h BYTE SCSI version (see #00246)
+ 03h BYTE data format/capabilities (see #00247)
+ 04h BYTE additional data length (total remaining bytes)
+ 05h 2 BYTEs reserved
+ 07h BYTE device capabilities (see #00248)
+ 08h 8 BYTEs vendor identification (space-padded ASCII)
+ 10h 8 BYTEs product identification (space-padded ASCII)
+ 20h 4 BYTEs product revision level (space-padded ASCII)
+ 24h 20 BYTEs vendor specific
+ 38h 40 BYTEs reserved
+ 60h var vendor specific parameters
+
+(Table 00244)
+Values for Future Domain SCSI peripheral device type:
+ 00h direct-access device (e.g., magnetic disk)
+ 01h sequential-access device (e.g., magnetic tape)
+ 02h printer device
+ 03h processor device
+ 04h write-once device (e.g., some optical disks)
+ 05h CD-ROM device
+ 06h scanner device
+ 07h optical memory device (e.g., some optical disks)
+ 08h medium changer device (e.g., jukeboxes)
+ 09h communications device
+ 0Ah (defined by ASC IT8)
+ 0Bh (defined by ASC IT8)
+ 0Ch-1Eh reserved
+ 1Fh unknown or no device type
+
+(Table 00245)
+Values for Future Domain SCSI peripheral qualifier:
+ 000b device is currently connected to this logical unit and available
+ 001b target is capable of supporting the specified peripheral, but the
+ physical device is not currently connected to this logical unit
+ 010b reserved
+ 011b target can't support a physical device on this logical unit
+ 1xxb vendor specific
+
+Bitfields for Future Domain SCSI version:
+Bit(s) Description (Table 00246)
+ 0-2 ANSI-approved version
+ 000 device might or might not comply to ANSI standard
+ 001 device complies to ANSI SCSI-1
+ 010 device complies to ANSI SCSI-2
+ other reserved
+ 3-5 ECMA version
+ 6-7 ISO version
+
+Bitfields for Future Domain SCSI data format/capabilities:
+Bit(s) Description (Table 00247)
+ 0-2 response data format
+ 000 information block is as specified in SCSI-1
+ 001 information block is as specified in CCS
+ 010 information block is as specified in SCSI-2
+ other reserved
+ 4-5 reserved
+ 6 terminate I/O process supported
+ 7 asynchronous event notification supported
+
+Bitfields for Future Domain SCSI device capabilities:
+Bit(s) Description (Table 00248)
+ 0 device responds to RESET with a hard RESET
+ 1 tagged command queuing supported
+ 2 reserved
+ 3 linked commands supported
+ 4 synchronous data transfer supported
+ 5 16-transfers supported
+ 6 32-transfers supported
+ 7 relative addressing supported
+--------B-1318-------------------------------
+INT 13 - DISK - SET MEDIA TYPE FOR FORMAT (AT model 3x9,XT2,XT286,PS)
+ AH = 18h
+ DL = drive number
+ CH = lower 8 bits of highest cylinder number (number of cylinders - 1)
+ CL = sectors per track (bits 0-5)
+ top 2 bits of highest cylinder number (bits 6,7)
+Return: AH = status
+ 00h requested combination supported
+ 01h function not available
+ 0Ch not supported or drive type unknown
+ 80h there is no disk in the drive
+ ES:DI -> 11-byte parameter table (see #01264 at INT 1E)
+Note: this function does not set the INT 1E vector to point at the returned
+ parameter table; it is the caller's responsibility to do so
+SeeAlso: AH=05h,AH=07h,AH=17h,INT 1E
+--------d-1318-------------------------------
+INT 13 - Future Domain SCSI BIOS - GET SCSI CONTROLLER INFORMATION
+ AH = 18h
+ DL = hard drive ID
+Return: CF set on error
+ AH = status code (see #00234 at AH=01h)
+ CF clear if successful
+ AX = 4321h (magic number)
+ CX = controller family code (see #00249)
+ ---if family code=0200h
+ DH = number of exclusively ROM-controlled SCSI devices
+ DL = canonical SCSI device number for specified drive
+ ---if family code <> 0200h
+ BH = number of exclusively ROM-controlled SCSI devices
+ BL = canonical SCSI device number for specified drive
+Notes: also sets an internal flag (non-resettable) which prevents some
+ controller messages from being displayed, allows writes to
+ removable devices (use caution!), and enables the INT 13 interface
+ for more than one drive (i.e. DL >= 81h) in at least some ROM
+ versions
+ the TMC-950 does not support any Future Domain BIOS calls; instead,
+ it provides a full CAM implementation (see INT 4F/AX=8100h)
+SeeAlso: AH=05h"SCSI",AX=1700h"SCSI",AH=1Bh"SCSI",INT 4F/AX=8100h
+
+(Table 00249)
+Values for Future Domain SCSI controller family code:
+ 0200h TMC-1680/? (ROM 3.0)
+ 0203h TMC-1650/1660/1670/1680 (ROM 2.0)
+ 040Ah TMC-820/830/840/850/860/870/875/880/885 (ROM <= 6.0A)
+ 050Dh TMC-840/841/880/881 (ROM 5.2D)
+ 0700h TMC-830/850/860/875/885 (ROM 7.0)
+--------d-1318--CX5055-----------------------
+INT 13 - PU_1700.COM - INSTALLATION CHECK
+ AH = 18h
+ CX = 5055h ('PU')
+ DL = 00h
+Return: AX = 7570h ('up') if PU_1700 is installed
+Program: PU_1700 is a BIOS enhancer from PU Service Systems which permits
+ formatting diskettes at higher capacity (1.78M instead of 1.44M)
+SeeAlso: AX=057Fh/SI=324Dh"2M"
+--------d-1318--CXD2C9-----------------------
+INT 13 - XDF.COM - API
+ AH = 18h
+ CX = D2C9h ("R"+80h, "I"+80h = Roger Ivey)
+ DX = 0000h
+ BX = function
+ 0000h installation check
+ Return: AH = 0Ch
+ CX = 7269h ("ri" = Roger Ivey)
+ ES = segment of driver
+ CF set
+ 2F64h ("/d") disable the driver
+ Return: AH = 0Ch
+ ES:BX = pointer to activation flag (it is set to 0:
+ set it to 1 to enable the driver again)
+ CX = 7269h
+ CF set
+ 2F75h ("/u") unload the driver (restore interrupts & free memory)
+ Return: AH = 0Ch
+ DL = 55h ("U") if successful
+ = 00h if fails
+ CX = 7269h
+ ES = segment of driver
+ CF set
+ AL, BX, DH, and DI destroyed
+Program: XDF is a TSR provided with PC-DOS 7.0 to support XDF 1.84M disks,
+ developed by Roger D. Ivey
+Note: After disabling or enabling the driver, a disk change must be performed
+ or simulated to reset the driver.
+--------B-1319-------------------------------
+INT 13 - FIXED DISK - PARK HEADS ON ESDI DRIVE (XT286,PS)
+ AH = 19h
+ DL = drive
+Return: CF set on error
+ CF clear if successful
+ AH = status (see #00234 at AH=01h)
+SeeAlso: AH=11h
+--------d-1319-------------------------------
+INT 13 - Future Domain SCSI CONTROLLER - REINITIALIZE DRIVE
+ AH = 19h
+ DL = hard drive ID
+Return: CF set on error
+ AH = status code (see #00234 at AH=01h)
+ CF clear if successful
+ AH = disk type (03h = fixed disk)
+ CX:DX = number of 512-byte sectors
+Notes: sends SCSI Read Capacity command to get number of logical blocks and
+ adjusts the result for 512-byte sectors
+ displays either "Error in Read Capacity Command" or "nnn Bytes per
+ sector" (nnn=256 or 512, the only sizes supported in the translation
+ code)
+ should probably be called when a removable device has its media changed
+ returns the same values as AH=15h
+ the TMC-950 does not support any Future Domain BIOS calls; instead,
+ it provides a full CAM implementation (see INT 4F/AX=8100h)
+SeeAlso: AH=15h,AH=1Ah,INT 4F/AX=8100h
+--------d-131A-------------------------------
+INT 13 - ESDI FIXED DISK - FORMAT UNIT (PS)
+ AH = 1Ah
+ AL = defect table entry count
+ CL = format modifiers (see #00250)
+ DL = drive (80h,81h)
+ ES:BX -> defect table (see #00251), ignored if AL=00h
+Return: CF set on error
+ CF clear if successful
+ AH = status (see #00234 at AH=01h)
+Note: if periodic interrupt selected, INT 15/AH=0Fh is called after each
+ cylinder is formatted
+SeeAlso: AH=07h,INT 15/AH=0Fh
+
+Bitfields for ESDI format modifiers:
+Bit(s) Description (Table 00250)
+ 4 generate periodic interrupt
+ 3 perform surface analysis
+ 2 update secondary defect map
+ 1 ignore secondary defect map
+ 0 ignore primary defect map
+
+Format of defect table entry [array]:
+Offset Size Description (Table 00251)
+ 00h 3 BYTEs relative sector address (little-endian)
+ 03h BYTE flags and defect count
+ bit 7: last logical sector on track
+ bit 6: first logical sector on track
+ bit 5: last logical sector on cylinder
+ bit 4: logical sectors are pushed onto next track
+ bits 3-0: number of defects pushed from previous cylinder
+--------d-131A-------------------------------
+INT 13 - Future Domain SCSI CONTROLLER - GET SCSI PARTIAL MEDIUM CAPACITY
+ AH = 1Ah
+ CH = track (bits 8,9 in high bits of CL)
+ CL = sector (01h to number of sectors/track for drive)
+ DH = head
+ DL = hard drive ID
+Return: CF set on error
+ AH = status code (see #00234 at AH=01h)
+ CX:DX = logical block number of last quickly-accessible block after
+ given block
+Notes: sends SCSI Read Capacity command with the PMI bit set to obtain the
+ logical block address of the last block after which a substantial
+ delay in data transfer will be encountered (usually the last block
+ on the current cylinder). No translation to 512 byte sectors is
+ performed on the result if data is stored on the disk in other than
+ 512 byte sectors.
+ the TMC-950 does not support any Future Domain BIOS calls; instead,
+ it provides a full CAM implementation (see INT 4F/AX=8100h)
+SeeAlso: AH=15h,AH=19h"SCSI"
+--------d-131B-------------------------------
+INT 13 - ESDI FIXED DISK - GET MANUFACTURING HEADER
+ AH = 1Bh
+ AL = number of sectors to read
+ DL = drive
+ ES:BX -> buffer for manufacturing header (defect list)
+Return: CF set on error
+ CF clear if successful
+ AH = status
+Note: manufacturing header format (Defect Map Record format) can be found
+ in IBM 70MB, 115MB Fixed Disk Drives Technical Reference
+ the first sector read contains the manufacturing header with the number
+ of defect entries and the beginning of the defect map; the remaining
+ sectors contain the remainder of the defect map
+--------d-131B-------------------------------
+INT 13 - Future Domain SCSI CONTROLLER - GET POINTER TO SCSI DISK INFO BLOCK
+ AH = 1Bh
+ DL = hard drive ID
+Return: CF set on error
+ AH = status code (see #00234 at AH=01h)
+ CF clear if successful
+ ES:BX -> SCSI disk information block (see #00252)
+Notes: also sets a non-resettable flag which prevents some controller messages
+ from being displayed
+ the TMC-950 does not support any Future Domain BIOS calls; instead,
+ it provides a full CAM implementation (see INT 4F/AX=8100h)
+SeeAlso: AH=18h"SCSI",AH=1Ch"SCSI"
+
+Format of Future Domain SCSI disk information block:
+Offset Size Description (Table 00252)
+ 00h BYTE drive physical information (see #00253)
+ 01h WORD translated number of cylinders
+ 03h BYTE translated number of heads
+ 04h BYTE translated number of sectors per track (17, 34, or 63)
+ 05h BYTE drive address
+ bits 0-2: logical unit number
+ bits 3-5: device number
+ 06h BYTE 01h at initialization
+ 07h BYTE sense code byte 00h, or extended sense code byte 0Ch
+ 08h BYTE 00h
+ 09h BYTE 00h or extended sense code byte 02h (sense key)
+ 0Ah BYTE 00h
+ 0Bh 10 BYTEs copy of Command Descriptor Block (CDB) (see #03236,#03237)
+ 15h DWORD translated number of sectors on device
+
+Bitfields for Future Domain SCSI device physical information:
+Bit(s) Description (Table 00253)
+ 0 ???
+ 1 device uses parity
+ 2 256 bytes per sector instead of 512
+ 3 don't have capacity yet???
+ 4 disk is removable
+ 5 logical unit number is not present
+--------d-131C-------------------------------
+INT 13 - Future Domain SCSI CONTROLLER - GET POINTER TO FREE CONTROLLER RAM
+ AH = 1Ch
+ DL = hard drive ID (any valid SCSI hard disk)
+Return: CF set on error
+ AH = status code (see #00234 at AH=01h)
+ CF clear if successful
+ ES:BX -> first byte of free RAM on controller
+Notes: the Future Domain TMC-870 contains 1024 bytes of RAM at offsets 1800h
+ to 1BFFh on-board the controller for storing drive information and
+ controller status; ES:BX points to the first byte available for other
+ uses
+ ES contains the segment at which the controller resides; the
+ controller's two memory-mapped I/O ports are at offsets 1C00h, 1E00h
+SeeAlso: AH=1Bh"SCSI"
+--------d-131C-------------------------------
+INT 13 U - ESDI FIXED DISK - ???
+ AH = 1Ch
+ AL = subfunction (01h-06h)
+ DL = drive (80h,81h)
+ ???
+Return: ???
+Note: these functions perform a controller command 0612h without DMA
+SeeAlso: AX=1C08h,PORT 3510h"ESDI"
+--------d-131C08-----------------------------
+INT 13 U - ESDI FIXED DISK - GET COMMAND COMPLETION STATUS
+ AX = 1C08h
+ DL = drive (80h,81h)
+ ES:BX -> buffer for Command Complete Status Block (see #00254)
+Return: CF set on error
+ CF clear if successful
+ AH = status (see #00234 at AH=01h)
+SeeAlso: AX=1C09h,AX=1C0Ah,PORT 3510h"ESDI"
+
+Format of ESDI Command Complete Status Block:
+Offset Size Description (Table 00254)
+ 00h BYTE 07h
+ 01h BYTE size of block in words (07h)
+ 02h BYTE command error code (see #00255)
+ 03h BYTE command status code (see #00256)
+ 04h BYTE device error code, group 1 (see #00257)
+ 05h BYTE device error flags, group 2 (see #00258)
+ 06h WORD number of unprocessed sectors due to abnormal termination
+ 08h DWORD last Relative Sector Address processed by command
+ 0Ch WORD number of sectors corrected by ECC codes
+
+(Table 00255)
+Values for ESDI command error code:
+ 00h successful
+ 01h parameter invalid
+ 02h unknown function
+ 03h unsupported command
+ 04h command cancelled
+ 05h unknown function
+ 06h controller diagnostics failed
+ 07h formatting failed
+ 08h format error in primary map
+ 09h format error in secondary map
+ 0Ah diagnostic failure during formatting
+ 0Bh warning: secondary map too large during formatting
+ 0Ch warning: non-zero defect
+ 0Dh system checksum error during formatting
+ 0Eh warning: incompatible device
+ 0Fh warning: push table overflowed
+ 10h warning: more than 15 sectors pushed to next cylinder
+ 11h internal hardware error
+ 12h warning: errors found while verifying sectors
+ 13h invalid device
+ FFh device error
+
+(Table 00256)
+Values for ESDI command status code:
+ 01h successful
+ 03h successful after ECC
+ 05h successful after retries
+ 06h format partially completed
+ 07h successful after ECC and retries
+ 08h command completed with warning (see #00255)
+ 09h abort complete
+ 0Ah reset complete
+ 0Bh data transfer ready (no status block)
+ 0Ch command completed with failure (see #00257,#00258)
+ 0Dh DMA error
+ 0Eh command block error (see #00255)
+ 0Fh bad attention code
+SeeAlso: #00257
+
+(Table 00257)
+Values for ESDI device error code, group 1:
+ 00h successful
+ 01h seek fault detected by device
+ 02h interface fault
+ 03h sector ID not found
+ 04h disk not formatted
+ 05h unrecoverable ECC error
+ 06h ECC error in sector ID
+ 07h invalid relative sector address
+ 08h timeout
+ 09h sector defective
+ 0Ah disk changed (removable media)
+ 0Bh selection error
+ 0Ch write protected (removable media)
+ 0Dh write fault
+ 0Eh read fault
+ 0Fh no index or sector pulse
+ 10h device not ready
+ 11h seek error detected by adapter
+ 12h bad format
+ 13h volume overflow
+ 14h data address mark not found
+ 15h sector ID not found
+ 16h missing device configuration data
+ 17h first/last relative sector flags missing
+ 18h track empty
+ 81h timeout while waiting for stop
+ 82h timeout while waiting for end of data transfer
+ 84h stopped awaiting data transfer during formatting
+ 85h timeout while waiting for head switch
+ 86h timeout while awaiting DMA completion
+SeeAlso: #00256,#00258
+
+Bitfields for ESDI device error flags, group 2:
+Bit(s) Description (Table 00258)
+ 7-5 unused
+ 4 ready
+ 3 selected
+ 2 write fault
+ 1 on track 0
+ 0 seek/command complete
+SeeAlso: #00257
+--------d-131C09-----------------------------
+INT 13 U - ESDI FIXED DISK - GET DEVICE STATUS
+ AX = 1C09h
+ DL = drive (80h,81h)
+ ES:BX -> buffer for Device Status Block (see #00259)
+Return: CF set on error
+ CF clear if successful
+ AH = status (see #00234 at AH=01h)
+SeeAlso: AX=1C08h,AX=1C0Ah,PORT 3510h"ESDI"
+
+Format of ESDI Device Status Block:
+Offset Size Description (Table 00259)
+ 00h BYTE 08h
+ 01h BYTE number of words in block (09h)
+ 02h BYTE error flags
+ 03h BYTE unused
+ 04h BYTE command error code (see #00255)
+ 05h BYTE command status code (see #00256)
+ 06h WORD ESDI standard status
+ 08h 5 WORDs ESDI vendor-specific status codes
+--------d-131C0A-----------------------------
+INT 13 U - ESDI FIXED DISK - GET DEVICE CONFIGURATION
+ AX = 1C0Ah
+ DL = drive (80h,81h)
+ ES:BX -> buffer for Drive Configuration Status Block (see #00260)
+Return: CF set on error
+ CF clear if successful
+ AH = status (see #00234 at AH=01h)
+Note: device configuration format can be found in IBM ESDI Fixed Disk Drive
+ Adapter/A Technical Reference
+SeeAlso: AX=1C08h,AX=1C0Bh,AX=1C0Ch
+
+Format of ESDI Drive Configuration Status Block:
+Offset Size Description (Table 00260)
+ 00h BYTE 09h
+ 01h BYTE number of words in block (06h)
+ 02h BYTE flags
+ 03h BYTE number of spare sectors per cylinder
+ 04h DWORD total number of usable sectors
+ 08h WORD total number of cylinders
+ 0Ah BYTE tracks per cylinder
+ 0Bh BYTE sectors per track
+--------d-131C0B-----------------------------
+INT 13 U - ESDI FIXED DISK - GET ADAPTER CONFIGURATION
+ AX = 1C0Bh
+ ES:BX -> buffer for Controller Configuration Status Block (see #00261)
+Return: CF set on error
+ CF clear if successful
+ AH = status (see #00234 at AH=01h)
+SeeAlso: AX=1C0Ch
+
+Format of ESDI Controller Configuration Status Block:
+Offset Size Description (Table 00261)
+ 00h BYTE E9h
+ 01h BYTE number of words in block (06h)
+ 02h WORD unused (0000h)
+ 04h DWORD controller microcode revision level
+ 08h 2 WORDs unused (0000h)
+--------d-131C0C-----------------------------
+INT 13 U - ESDI FIXED DISK - GET POS INFORMATION
+ AX = 1C0Ch
+ ES:BX -> buffer for POS Information Status Block (see #00262)
+Return: CF set on error
+ CF clear if successful
+ AH = status (see #00234 at AH=01h)
+SeeAlso: AX=1C0Bh
+
+Format of ESDI POS Information Status Block:
+Offset Size Description (Table 00262)
+ 00h BYTE EAh
+ 01h BYTE number of words in block (05h)
+ 02h WORD magic value FFDDh
+ 04h BYTE POS register 3
+ 05h BYTE POS register 2
+ 06h BYTE POS register 5 (unused, FFh)
+ 07h BYTE POS register 4 (unused, FFh)
+ 08h BYTE POS register 7 (unused, FFh)
+ 09h BYTE POS register 6 (unused, FFh)
+--------d-131C0D-----------------------------
+INT 13 U - ESDI FIXED DISK - ???
+ AX = 1C0Dh
+ DL = drive (80h,81h)
+ ???
+Return: ???
+Note: invokes controller command 0614h without DMA
+SeeAlso: AH=1Ch"ESDI",AX=1C0Fh,PORT 3510h"ESDI"
+--------d-131C0E-----------------------------
+INT 13 U - ESDI FIXED DISK - TRANSLATE RBA TO ABA
+ AX = 1C0Eh
+ CH = low 8 bits of cylinder number
+ CL = sector number, high two bits of cylinder number in bits 6 and 7
+ DH = head number
+ DL = drive number (80h,81h)
+ ES:BX -> ABA number
+Return: CF set on error
+ CF clear if successful
+ AH = status (see #00234 at AH=01h)
+Note: ABA (absolute block address) format can be found in IBM ESDI Adapter
+ Technical Reference by using its Device Configuration Status Block
+SeeAlso: AX=1C08h,AX=1C0Fh,PORT 3510h"ESDI"
+--------d-131C0F-----------------------------
+INT 13 U - ESDI FIXED DISK - ???
+ AX = 1C0Fh
+ DL = drive (80h,81h)
+ ???
+Return: ???
+Note: invokes controller command 0614h without DMA
+SeeAlso: AH=1Ch"ESDI",AX=1C0Dh,AX=1C12h,PORT 3510h"ESDI"
+--------d-131C12-----------------------------
+INT 13 U - ESDI FIXED DISK - ???
+ AX = 1C12h
+ DL = drive (80h,81h)
+ ???
+Return: ???
+Note: invokes controller command 0612h without DMA
+SeeAlso: AH=1Ch"ESDI",AX=1C0Fh,PORT 3510h"ESDI"
+--------c-131D-------------------------------
+INT 13 - IBMCACHE.SYS - CACHE STATUS
+ AH = 1Dh
+ AL = subfunction
+ 01h get status record
+ DL = drive???
+ Return: ES:BX -> status record (see #00263)
+ CF set on error
+ AH = error code
+ 02h set cache status
+ ES:BX -> status record (see #00263)
+ DL = drive???
+ Return: CF set on error
+
+Format of IBMCACHE.SYS status record:
+Offset Size Description (Table 00263)
+ 00h DWORD total number of read requests
+ 04h DWORD total number of hits
+ 08h DWORD number of physical disk reads
+ 0Ch DWORD total number of sectors requested by physical disk reads
+ 10h 6 BYTEs ???
+ 16h DWORD pointer to start of error list (see #00264)
+ 1Ah DWORD pointer to end of error list
+ 1Eh WORD ???
+ 20h BYTE using extended memory if nonzero
+ 21h BYTE ???
+ 22h 4 BYTEs ASCII version number
+ 26h WORD cache size in KB
+ 28h WORD sectors per page
+
+Format of IBMCACHE.SYS error list:
+Offset Size Description (Table 00264)
+ 00h DWORD relative block address of bad page
+ 04h BYTE drive
+ 05h BYTE sector bit-map
+ 06h WORD next error
+--------d-131F-------------------------------
+INT 13 - SyQuest - DOOR LATCH/DOOR BUTTON DETECT
+ AH = 1Fh
+ AL = subfunction
+ 00h allow media removal
+ 01h prevent media removal (lock door)
+ DL = drive ID (bit 7 set for hard disks)
+Return: CF clear if successful
+ AH = 00h
+ CF set on error
+ AH = error code
+ 00h successful
+ 01h invalid function request
+ 80h timeout
+ DDh media change requested
+SeeAlso: AH=12h"SyQuest",AH=13h"SyQuest",AH=59h"SyQuest"
+--------d-1320-------------------------------
+INT 13 - DISK - ??? (Western Digital "Super BIOS")
+ AH = 20h
+ ???
+Return: ???
+Notes: returns some kind of status related to whether the drive contains its
+ default media type
+ QEMM v6.00 calls INT 13/AX=2000h/DL=81h in some cases
+--------b-1320-------------------------------
+INT 13 U - Compaq, ATAPI Removable Media Device - GET CURRENT MEDIA FORMAT
+ AH = 20h
+ DL = drive number (00h,01h)
+Return: CF clear if successful
+ AL = media type (see #00265)
+ AH = 00h
+ CF set on error
+ AH = error code
+ 01h invalid request
+ 30h drive does not support media sense
+ 31h no such drive / media not present
+ 32h non-default media / drive does not support media type
+Notes: this function is supported by the 1993/3/8 Compaq ROM BIOS, but only
+ partially (AL is always 00h when successful) by the 1993/8/3 version
+ this function is also supported by some recent versions of the Phoenix
+ 486 BIOS
+ this function does not seem to be supported by some Toshiba BIOSes
+ (at least before 1995, maybe some laptops??? with 1.44 MB floppies),
+ because S/DOS 1.0 contains code to bypass a call to this function,
+ always assuming the drive would not support media sense.
+SeeAlso: AH=15h
+
+(Table 00265)
+Values for Compaq/ATAPI diskette media type:
+ 03h 720K (1M unformatted)
+ 04h 1.44M (2M unformatted)
+ 06h 2.88M (4M unformatted)
+ 0Ch 360K
+ 0Dh 1.2M
+ 0Eh Toshiba 3mode
+ 0Fh NEC 3mode (1024-byte sectors)
+ 10h ATAPI Removable Media Device
+--------c-1320-------------------------------
+INT 13 u - QUICKCACHE II v4.20 - DISMOUNT
+ AH = 20h
+ AL = drive (00h = A:, etc. or 7Fh for all removable drives???
+ or FFh for all drives)
+Return: AX = status (0000h successful)
+Program: QUICKCACHE II is a shareware disk cache by P.R. Glassel and
+ Associates, Inc.
+Desc: flush any dirty buffers for the specified drive(s) and then discard
+ those sector buffers
+SeeAlso: AH=21h"QUICKCACHE",AH=22h"QUICKCACHE",AH=28h
+--------d-1321-------------------------------
+INT 13 - HARD DISK - PS/1 and newer PS/2 - READ MULTIPLE DISK SECTORS
+ AH = 21h
+ AL = number of sectors to write
+ CH = low byte of 12-bit cylinder number
+ CL = starting sector (bits 0-5) and bits 8-9 of cylinder (bits 6-7)
+ DH = head number (bits 0-5) and bits 10-11 of cylinder (bits 6-7)
+ DL = drive number (80h,81h)
+ ES:BX -> buffer for data to be read
+Return: CF clear if successful
+ ES:BX buffer filled
+ CF set on error
+ AH = status (see #00234 at AH=01h)
+Desc: read from the disk using the Multiple Block mode available on newer
+ IDE drives and some hard disk controllers, which generates an
+ interrupt only after the end of transferring a group of sectors
+ rather than after each sector
+Notes: must call AH=24h"PS/1" before using this function
+ input values in CL and DH are not range-checked
+ the byte at address 0040h:0074h is set to the status of the operation
+SeeAlso: AH=02h,AH=22h"PS/1",AH=23h"PS/1",AH=24h"PS/1"
+--------c-1321-------------------------------
+INT 13 u - QUICKCACHE II v4.20 - FLUSH CACHE
+ AH = 21h
+Return: AX = status (0000h successful)
+Desc: immediately write all dirty sectors back to disk
+Note: this is one out of several cache flush calls issued by the PTS-DOS 6.51
+ and S/DOS 1.0 kernel before rebooting. It is called with DL=80h and
+ conflicts with the PS/2 function of the same function number, because
+ the kernel does not perform Quickcache's installation check first.
+SeeAlso: AH=25h"QUICKCACHE",AH=2Eh,AH=2Fh
+--------d-1322-------------------------------
+INT 13 - HARD DISK - PS/1 and newer PS/2 - WRITE MULTIPLE DISK SECTORS
+ AH = 22h
+ AL = number of sectors to write
+ CH = low byte of 12-bit cylinder number
+ CL = starting sector (bits 0-5) and bits 8-9 of cylinder (bits 6-7)
+ DH = head number (bits 0-5) and bits 10-11 of cylinder (bits 6-7)
+ DL = drive number (80h,81h)
+ ES:BX -> buffer containing data to be written
+Return: CF clear if successful
+ CF set on error
+ AH = status (see #00234 at AH=01h)
+Desc: write to the disk using the Multiple Block mode available on newer
+ IDE drives and some hard disk controllers, which generates an
+ interrupt only after the end of transferring a group of sectors
+ rather than after each sector
+Notes: must call AH=24h"PS/1" before using this function
+ input values in CL and DH are not range-checked
+ the byte at address 0040h:0074h is set to the status of the operation
+SeeAlso: AH=03h,AH=21h"PS/1",AH=23h"PS/1",AH=24h"PS/1"
+--------c-1322-------------------------------
+INT 13 u - QUICKCACHE II v4.20 - ENABLE/DISABLE CACHE
+ AH = 22h
+ AL = new state (00h disabled, 01h enabled)
+Return: AX = status (0000h successful)
+Note: enables/disables caching of all drives
+SeeAlso: AH=2Ch,AH=2Dh,AH=32h,AH=33h,AH=A3h,AH=A4h
+--------d-1323-------------------------------
+INT 13 U - HARD DISK - PS/1 and newer PS/2 - SET CONTROLLER FEATURES REGISTER
+ AH = 23h
+ AL = feature number (see #00266)
+ DL = drive number (80h,81h)
+ ???
+Return: CF clear if successful
+ CF set on error
+ AH = status (see #00234 at AH=01h)
+SeeAlso: AH=21h"PS/1",AH=22h"PS/1",AH=24h"PS/1",AH=25h"PS/1"
+
+(Table 00266)
+Values for PS/1 hard disk feature number:
+ 01h select 8-bit data transfers instead of 16-bit
+ 02h enable write cache
+ 22h Write Same, user-specified area
+ 33h disable retries
+ 44h set number of ECC bytes for read long/write long (see AH=0Ah,AH=0Bh)
+ 54h set cache segments
+ 55h disable lookahead
+ 66h disable reverting to power-on defaults
+ 77h disable error correctioni
+ 81h select 16-bit data transfers (default)
+ 82h disable write cache
+ 88h enable error correction (default)
+ 99h enable retries (default)
+ AAh enable lookahead
+ BBh set ECC length for read long/write long to four bytes
+ CCh enable reverting to power-on defaults
+ DDh Write Same, entire disk
+SeeAlso: #P0535
+--------c-1323-------------------------------
+INT 13 U - QUICKCACHE II v4.20 - GET ??? ADDRESS
+ AH = 23h
+Return: AX = status (0000h successful)
+ ES = segment of ??? data
+--------d-1324-------------------------------
+INT 13 - HARD DISK - PS/1 and newer PS/2 - SET MULTIPLE MODE
+ AH = 24h
+ AL = number of sectors per block (2,4,8,16)
+ DL = drive number (80h,81h)
+Return: CF clear if successful
+ CF set onerror
+ AH = status (see #00234 at AH=01h)
+Desc: specify how many sectors the controller should transfer as a group
+ between operation-complete interrupts when using the Read Multiple
+ and Write Multiple functions (AH=21h,AH=22h)
+Notes: set the number of sectors to 0 to disable multiple-transfer mode
+ the maximum value for the block size depends on the fixed disk
+ drive type. The value is stored in byte 15h of the fixed disk
+ drive parameter table that is created by POST.
+ the byte at address 0040h:0074h is set to status of operation.
+SeeAlso: AH=21h"PS/1",AH=22h"PS/1",AH=23h"PS/1",AH=25h"PS/1"
+--------c-1324-------------------------------
+INT 13 u - QUICKCACHE II v4.20 - SET SECTORS
+ AH = 24h
+ BX = new number of sector buffers in cache
+Return: AX = status
+ 0000h successful
+ 0001h failed--size adjusted
+ 8000h cache cannot be resized while enabled
+SeeAlso: AH=36h
+--------d-1325-------------------------------
+INT 13 - HARD DISK - PS/1 and newer PS/2 - IDENTIFY DRIVE
+ AH = 25h
+ DL = drive number (80h,81h)
+ ES:BX-> 512 byte buffer for reply packet
+Return: CF clear if successful
+ CF set on error
+ AH = status (see #00234 at AH=01h)
+ buffer filled with ATA/IDE-style drive information block (see #00267)
+Desc: retrieves the 256 words of drive data stored on an IDE hard disk
+Notes: the byte at address 0040h:0074h is set to the status of the operation
+ IBM officially classifies this function as optional
+SeeAlso: AH=23h"PS/1"
+
+Format of drive information block:
+Offset Size Description (Table 00267)
+ 00h WORD general drive configuration (see #00268)
+ 02h WORD number of cylinders
+ 04h WORD reserved
+ 06h WORD number of heads
+ 08h WORD number of unformatted bytes per track
+ 0Ah WORD number of unformatted bytes per sector
+ 0Ch WORD number of sectors per track
+ 0Eh 6 BYTEs vendor unique
+ 14h 20 BYTEs serial number in ASCII, 0000h=not specified)
+ 28h WORD buffer type
+ 2Ah WORD buffer size in 512 byte increments (0000h=not specified)
+ 2Ch WORD number of ECC bytes passed on Read/Write Long cmds
+ 0000h = not specified
+ 2Eh 8 BYTEs firmware revision in ASCII, 0000h=not specified
+ 36h 40 BYTEs model number in ASCII, 0000h=not specified
+ 5Eh WORD bits 15-8 Vendor Unique
+ bits 7-0 00h = Read/Write Multiple commands not implemented
+ xxh = Maximum number of sectors that can be
+ transferred per interrupt on Read and Write
+ Multiple commands
+ 60h WORD 0000h = cannot perform doubleword I/O
+ 0001h = can perform doubleword I/O
+ 62h WORD capabilities
+ bit 15-9 0=reserved
+ bit 8 1=DMA Supported
+ bit 7-0 Vendor Unique
+ 64h WORD reserved
+ 66h WORD bits 15-8 PIO data transfer cycle timing mode
+ bits 7-0 Vendor Unique
+ 68h WORD bits 15-8 DMA data transfer cycle timing mode
+ bits 7-0 Vendor Unique
+ 6Ah WORD bits 15-1 reserved
+ bit 0 1=the fields reported in tranlation mode are valid
+ 0=the fields reported in translation mode may be valid
+ 6Ch WORD number of current cylinders
+ 6Eh WORD number of current heads
+ 70h WORD number of current sectors per track
+ 72h DWORD current capacity in sectors
+ 76h WORD reserved
+ 78h 136 BYTEs not defined by ATA spec 2.6
+100h 64 BYTEs vendor unique
+140h 96 BYTEs reserved
+Note: the above description is as in the ATA (AT Attachment) Specification.
+SeeAlso: #P0516
+
+Bitfields for general drive configuration:
+Bit(s) Description (Table 00268)
+ 15 0 reserved for non-magnetic drives
+ 14 format speed tolerance gap required
+ 13 track offset option available
+ 12 data strobe offset option available
+ 11 rotational speed tolerance is > 0.5%
+ 10 disk transfer rate > 10 Mbs
+ 9 disk transfer rate > 5Mbs but <= 10Mbs
+ 8 disk transfer rate <= 5Mbs
+ 7 removable cartridge drive
+ 6 fixed drive
+ 5 spindle motor control option implemented
+ 4 head switch time > 15 usec
+ 3 not MFM encoded
+ 2 soft sectored
+ 1 hard sectored
+ 0 reserved (0)
+--------c-1325-------------------------------
+INT 13 u - QUICKCACHE II v4.20 - SET FLUSH INTERVAL
+ AH = 25h
+ BX = interval
+Return: AX = status (0000h successful)
+Desc: specify how often the cache should write dirty buffers to disk when
+ buffered writes are enabled
+SeeAlso: AH=21h"QUICKCACHE",AH=2Ch,AH=2Eh
+--------c-1326-------------------------------
+INT 13 U - QUICKCACHE II v4.20 - UNINSTALL
+ AH = 26h
+Return: AX = status
+ 0000h successful
+ 0001h-00FFh interrupt vector which was hooked by another TSR
+SeeAlso: AH=27h
+--------c-1327--BX0000-----------------------
+INT 13 u - QUICKCACHE II v4.20 - INSTALLATION CHECK
+ AH = 27h
+ BX = 0000h
+Return: AX = 0000h if installed
+ BX nonzero if installed
+ BH = major version
+ BL = binary minor version
+Program: QUICKCACHE II is a shareware disk cache by P.R. Glassel and
+ Associates, Inc.
+SeeAlso: AH=26h,AH=A0h,INT 16/AX=FFA5h/CX=1111h
+--------c-1328-------------------------------
+INT 13 U - QUICKCACHE II v4.20 - SET AUTOMATIC DISMOUNT
+ AH = 28h
+ AL = new state (00h disabled, 01h enabled)
+Return: AX = status (0000h successful)
+SeeAlso: AH=20h"QUICKCACHE"
+--------c-1329-------------------------------
+INT 13 U - QUICKCACHE II v4.20 - NOP
+ AH = 29h
+Return: AX = 0000h
+--------c-132A-------------------------------
+INT 13 u - QUICKCACHE II v4.20 - SET BUFFER SIZE
+ AH = 2Ah
+ AL = buffer size (1-30)
+Return: AX = status (0000h successful)
+Desc: specify the number of cache sector buffers to dedicate to buffered read
+ and write operations
+SeeAlso: AH=2Ch,AH=2Dh,AH=39h,AH=3Ah
+--------c-132B-------------------------------
+INT 13 U - QUICKCACHE II v4.20 - DRIVE ACCESS SOUNDS
+ AH = 2Bh
+ AL = new state (00h disabled, 01h enabled)
+Return: AX = status (0000h successful)
+--------c-132C-------------------------------
+INT 13 u - QUICKCACHE II v4.20 - SET BUFFERED WRITES
+ AH = 2Ch
+ AL = new state (00h disabled, 01h enabled)
+Return: AX = status (0000h successful)
+Desc: specify whether the cache should delay disk writes
+Note: this function enables or disables delayed writes for all drives; use
+ AH=38h to change a single drive
+SeeAlso: AH=25h"QUICKCACHE",AH=2Dh,AH=2Eh,AH=38h
+--------c-132D-------------------------------
+INT 13 u - QUICKCACHE II v4.20 - SET BUFFERED READ
+ AH = 2Dh
+ AL = new state (00h disabled, 01h enabled)
+Return: AX = status (0000h successful)
+Desc: specify whether the cache should attempt to read ahead of actual
+ requests
+Note: this function enables or disables read-ahead for all drives; use AH=37h
+ to change a single drive
+SeeAlso: AH=2Ch,AH=37h
+--------c-132E-------------------------------
+INT 13 u - QUICKCACHE II v4.20 - SET FLUSH COUNT
+ AH = 2Eh
+ BX = flush count
+Return: AX = status (0000h successful)
+Desc: specify how many dirty sectors the cache should write after each flush
+ interval (see AH=25h"QUICKCACHE") when buffered writes are enabled
+SeeAlso: AH=21h"QUICKCACHE",AH=25h"QUICKCACHE",AH=2Ch
+--------c-132F-------------------------------
+INT 13 - QUICKCACHE II v4.20 - FORCE IMMEDIATE INCREMENTAL FLUSH
+ AH = 2Fh
+Return: AX = status (0000h successful)
+Desc: immediately flush up to "flushcount" dirty sectors to disk as if the
+ flush interval had expired
+SeeAlso: AH=21h"QUICKCACHE"
+--------c-1330-------------------------------
+INT 13 u - QUICKCACHE II v4.20 - GET INFO
+ AH = 30h
+ AL = what to get
+ 00h system info (see #00269)
+ 01h drive info (see #00270)
+ 02h access frequency (array of 30 words)
+ 03h drive index
+ (array of 32 bytes indicating BIOS drive for DOS drive)
+ DS:DX -> buffer for info
+Return: AX = status (0000h successful, 8000h invalid info specifier)
+Program: QUICKCACHE II is a shareware disk cache by P.R. Glassel and
+ Associates, Inc.
+
+Format of QUICKCACHE II system info:
+Offset Size Description (Table 00269)
+ 00h BYTE flag: cache enabled
+ 01h BYTE flag: buffered writes enabled
+ 02h BYTE flag: buffered reads enabled
+ 03h BYTE flag: sounds enabled
+ 04h BYTE flag: autodismount enabled
+ 05h BYTE ???
+ 06h BYTE flag: ???
+ 07h BYTE flag: ???
+ 08h BYTE flag: "em_assigned"
+ 09h BYTE flag: emulated EMS
+ 0Ah BYTE single sector bonus
+ 0Bh BYTE "sticky_max"
+ 0Ch BYTE write sector bonus
+ 0Dh BYTE bonus threshold
+ 0Eh WORD flush interval
+ 10h WORD flush count
+ 12h WORD reserve pool size
+ 14h WORD remaining space in reserve pool
+ 16h WORD required free memory
+ 18h WORD total cache sectors
+ 1Ah WORD dirty cache sectors
+ 1Ch BYTE trace buffer size
+ 1Dh BYTE reserved (padding)
+SeeAlso: #00270
+
+Format of QUICKCACHE II drive info [16-element array, one element]:
+Offset Size Description (Table 00270)
+ 00h BYTE DOS drive number
+ 01h BYTE BIOS drive number
+ 02h BYTE maximum sector number
+ 03h BYTE maximum head number
+ 04h BYTE read buffer size
+ 05h BYTE write buffer size
+ 06h BYTE last status
+ 07h BYTE flag: enabled
+ 08h BYTE flag: buffered write enabled
+ 09h BYTE flag: buffered read enabled
+ 0Ah BYTE flag: in use (drive info is valid)
+ 0Bh BYTE flag: cylinder flush
+ 0Ch BYTE reserved (padding)
+ 0Dh BYTE sectors per track
+ 0Eh WORD sector size
+ 10h WORD sectors assigned
+ 12h WORD dirty sectors
+ 14h WORD reserved sectors
+ 16h WORD number of read errors
+ 18h WORD number of write errors
+ 1Ah DWORD "rio_count"
+ 1Eh DWORD number of cache misses
+ 22h DWORD "wio_count"
+ 26h DWORD "dio_count"
+SeeAlso: #00269
+--------c-1331-------------------------------
+INT 13 U - QUICKCACHE II v4.20 - RESERVE MEMORY
+ AH = 31h
+ BX = number of paragraphs of conventional memory to reserve for apps
+Return: AX = status (0000h successful)
+--------c-1332-------------------------------
+INT 13 U - QUICKCACHE II v4.20 - ENABLE CACHING FOR SPECIFIC DRIVE
+ AH = 32h
+ AL = drive number (00h=A:)
+Return: AX = status (0000h successful)
+SeeAlso: AH=22h"QUICKCACHE",AH=33h
+--------c-1333-------------------------------
+INT 13 U - QUICKCACHE II v4.20 - DISABLE CACHING FOR SPECIFIC DRIVE
+ AH = 33h
+ AL = drive number (00h=A:)
+Return: AX = status (0000h successful)
+SeeAlso: AH=22h"QUICKCACHE",AH=32h
+--------c-1334-------------------------------
+INT 13 U - QUICKCACHE II v4.20 - SECTOR LOCKING
+ AH = 34h
+ AL = function
+ 00h end sector locking/unlocking
+ 01h lock all accessed sectors into cache
+ 02h unlock all accessed sectors and discard from cache
+Return: AX = status (0000h successful)
+SeeAlso: AH=20h"QUICKCACHE",AH=35h
+--------c-1335-------------------------------
+INT 13 U - QUICKCACHE II v4.20 - SET LOCK POOL SIZE
+ AH = 35h
+ BX = number of sectors in lock pool
+Return: AX = status (0000h successful)
+Desc: specify the number of cache sector buffers which may be dedicated to
+ data locked into the cache
+SeeAlso: AH=34h
+--------c-1336-------------------------------
+INT 13 U - QUICKCACHE II v4.20 - SET TRACE BUFFER SIZE
+ AH = 36h
+ AL = new size of trace buffer
+Return: AX = status (0000h successful)
+Note: called with AL=05h during an INT 13/AH=24h"QUICKCACHE" call
+SeeAlso: AH=24h"QUICKCACHE"
+--------c-1337-------------------------------
+INT 13 U - QUICKCACHE II v4.20 - SET BUFFERED READS FOR SPECIFIC DRIVE
+ AH = 37h
+ AL = new state (00h disabled, else enabled)
+ DL = drive number (00h = A:)
+Return: AX = status (0000h successful)
+SeeAlso: AH=2Dh,AH=38h
+--------c-1338-------------------------------
+INT 13 U - QUICKCACHE II v4.20 - SET BUFFERED WRITES FOR SPECIFIC DRIVE
+ AH = 38h
+ AL = new state (00h disabled, else enabled)
+ DL = drive number (00h = A:)
+Return: AX = status (0000h successful)
+SeeAlso: AH=2Ch,AH=37h
+--------c-1339-------------------------------
+INT 13 U - QUICKCACHE II v4.20 - SET READ BUFFER SIZE FOR SPECIFIC DRIVE
+ AH = 39h
+ AL = new size of read buffer
+ DL = drive number (00h = A:)
+Return: AX = status (0000h successful)
+Program: QUICKCACHE II is a shareware disk cache by P.R. Glassel and
+ Associates, Inc.
+SeeAlso: AH=2Ah,AH=3Ah
+--------c-133A-------------------------------
+INT 13 U - QUICKCACHE II v4.20 - SET WRITE BUFFER SIZE FOR SPECIFIC DRIVE
+ AH = 3Ah
+ AL = new size of write buffer
+ DL = drive number (00h = A:)
+Return: AX = status (0000h successful)
+SeeAlso: AH=2Ah,AH=39h
+--------c-133B-------------------------------
+INT 13 U - QUICKCACHE II v4.20 - ENABLE/DISABLE ???
+ AH = 3Bh
+ AL = new state of ??? (01h enabled, else disabled)
+Return: AX = status (0000h successful)
+Note: is affected by the flag reported at offset 05h of the system info
+ returned by AH=30h, and sets the flag at offset 06h
+SeeAlso: AH=3Ch
+--------c-133C-------------------------------
+INT 13 U - QUICKCACHE II v4.20 - ENABLE/DISABLE ???
+ AH = 3Ch
+ AL = new state of ??? (01h enabled, else disabled)
+Return: AX = status (0000h successful)
+Note: is affected by the flag reported at offset 05h of the system info
+ returned by AH=30h, and sets the flag at offset 07h
+SeeAlso: AH=3Bh
+--------c-133D-------------------------------
+INT 13 U - QUICKCACHE II v4.20 - ENABLE/DISABLE CYLINDER FLUSH FOR DRIVE
+ AH = 3Dh
+ AL = new state (01h enabled, else disabled)
+ DL = drive number (00h = A:)
+Return: AX = status (0000h successful)
+--------c-133E-------------------------------
+INT 13 U - QUICKCACHE II v4.20 - SET SINGLE-SECTOR BONUS
+ AH = 3Eh
+ AL = new value for bonus
+Return: AX = status (0000h successful)
+Desc: specify the bonus score to give to single-sector transfers in order to
+ keep those sectors in the cache longer
+--------c-133F-------------------------------
+INT 13 U - QUICKCACHE II v4.20 - SET BONUS THRESHOLD
+ AH = 3Fh
+ AL = new value for bonus threshold
+Return: AX = status (0000h successful)
+--------c-1340-------------------------------
+INT 13 U - QUICKCACHE II v4.20 - SET "sticky_max"
+ AH = 40h
+ AL = new value for "sticky_max"
+Return: AX = status (0000h successful)
+SeeAlso: AH=41h"QUICKCACHE"
+--------d-1341--BX55AA-----------------------
+INT 13 - IBM/MS INT 13 Extensions - INSTALLATION CHECK
+ AH = 41h
+ BX = 55AAh
+ DL = drive (80h-FFh)
+Return: CF set on error (extensions not supported)
+ AH = 01h (invalid function)
+ CF clear if successful
+ BX = AA55h if installed
+ AH = major version of extensions
+ 01h = 1.x
+ 20h = 2.0 / EDD-1.0
+ 21h = 2.1 / EDD-1.1
+ 30h = EDD-3.0
+ AL = internal use
+ CX = API subset support bitmap (see #00271)
+ DH = extension version (v2.0+ ??? -- not present in 1.x)
+Note: the Phoenix Enhanced Disk Drive Specification v1.0 uses version 2.0 of
+ the INT 13 Extensions API
+SeeAlso: AH=42h"INT 13 Ext",AH=48h"INT 13 Ext"
+
+Bitfields for IBM/MS INT 13 Extensions API support bitmap:
+Bit(s) Description (Table 00271)
+ 0 extended disk access functions (AH=42h-44h,47h,48h) supported
+ 1 removable drive controller functions (AH=45h,46h,48h,49h,INT 15/AH=52h)
+ supported
+ 2 enhanced disk drive (EDD) functions (AH=48h,AH=4Eh) supported
+ extended drive parameter table is valid (see #00273,#00278)
+ 3-15 reserved (0)
+--------c-1341-------------------------------
+INT 13 U - QUICKCACHE II v4.20 - SAVE/RESTORE ???
+ AH = 41h
+ AL = direction
+ 01h save to file
+ else restore from file
+ ES:DI -> 1024-byte buffer for ???
+Return: AX = status (0000h successful, 8000h failed)
+Program: QUICKCACHE II is a shareware disk cache by P.R. Glassel and
+ Associates, Inc.
+SeeAlso: AH=40h"QUICKCACHE"
+--------d-1342-------------------------------
+INT 13 - IBM/MS INT 13 Extensions - EXTENDED READ
+ AH = 42h
+ DL = drive number
+ DS:SI -> disk address packet (see #00272)
+Return: CF clear if successful
+ AH = 00h
+ CF set on error
+ AH = error code (see #00234)
+ disk address packet's block count field set to number of blocks
+ successfully transferred
+SeeAlso: AH=02h,AH=41h"INT 13 Ext",AH=43h"INT 13 Ext"
+
+Format of disk address packet:
+Offset Size Description (Table 00272)
+ 00h BYTE size of packet (10h or 18h)
+ 01h BYTE reserved (0)
+ 02h WORD number of blocks to transfer (max 007Fh for Phoenix EDD)
+ 04h DWORD -> transfer buffer
+ 08h QWORD starting absolute block number
+ (for non-LBA devices, compute as
+ (Cylinder*NumHeads + SelectedHead) * SectorPerTrack +
+ SelectedSector - 1
+ 10h QWORD (EDD-3.0, optional) 64-bit flat address of transfer buffer;
+ used if DWORD at 04h is FFFFh:FFFFh
+--------N-134257DX1234-----------------------
+INT 13 U - Beame&Whiteside BWLPD - INSTALLATION CHECK
+ AX = 4257h ("BW")
+ DX = 1234h
+Return: BX = 414Ch if installed
+Program: BWLPD is the printer daemon from the BW-NFS package
+SeeAlso: INT 62/AH=00h"ETHDEV"
+--------d-1343-------------------------------
+INT 13 - IBM/MS INT 13 Extensions - EXTENDED WRITE
+ AH = 43h
+ AL = write flags
+ ---v1.0,2.0---
+ bit 0: verify write
+ bits 7-1 reserved (0)
+ ---v2.1+ ---
+ 00h,01h write without verify
+ 02h write with verify
+ DL = drive number
+ DS:SI -> disk address packet (see #00272)
+Return: CF clear if successful
+ AH = 00h
+ CF set on error
+ AH = error code (see #00234)
+ disk address packet's block count field set to number of blocks
+ successfully transferred
+Note: the BIOS returns CF set/AH=01h (invalid function) if verify is
+ requested but not supported
+SeeAlso: AH=03h,AH=41h"INT 13 Ext",AH=42h"INT 13 Ext",AH=44h
+--------d-1344-------------------------------
+INT 13 - IBM/MS INT 13 Extensions - VERIFY SECTORS
+ AH = 44h
+ DL = drive number
+ DS:SI -> disk address packet (see #00272)
+Return: CF clear if successful
+ AH = 00h
+ CF set on error
+ AH = error code (see #00234)
+ disk address packet's block count field set to number of blocks
+ successfully verified
+SeeAlso: AH=04h,AH=41h"INT 13 Ext",AH=42h"INT 13 Ext",AH=47h
+--------d-1345-------------------------------
+INT 13 - IBM/MS INT 13 Extensions - LOCK/UNLOCK DRIVE
+ AH = 45h
+ AL = operation
+ 00h lock media in drive
+ 01h unlock media
+ 02h check lock status
+ DL = drive number
+Return: CF clear if successful
+ AH = 00h
+ AL = lock state (00h = unlocked)
+ CF set on error
+ AH = error code (see #00234)
+Notes: this function is required to be supported for any removable drives
+ numbered 80h or higher
+ a device may be locked even if no media is present in the drive
+ up to 255 locks may be placed on a drive, and the media will not
+ be physically unlocked until all locks have been removed
+SeeAlso: AH=41h"INT 13 Ext",AH=46h,AH=49h,INT 15/AH=52h"INT 13 Extensions"
+--------d-1346-------------------------------
+INT 13 - IBM/MS INT 13 Extensions - EJECT MEDIA
+ AH = 46h
+ AL = 00h (reserved)
+ DL = drive number
+Return: CF clear if successful
+ AH = 00h
+ CF set on error
+ AH = error code (see #00234)
+SeeAlso: AH=49h,INT 15/AH=52h"INT 13 Extensions"
+--------d-1347-------------------------------
+INT 13 - IBM/MS INT 13 Extensions - EXTENDED SEEK
+ AH = 47h
+ DL = drive number
+ DS:SI -> disk address packet (see #00272)
+Return: CF clear if successful
+ AH = 00h
+ CF set on error
+ AH = error code (see #00234)
+Note: this function initiates the seek, and may return before the seek
+ actually completes
+SeeAlso: AH=0Ch,AH=42h"INT 13 Ext"
+--------d-1348-------------------------------
+INT 13 - IBM/MS INT 13 Extensions - GET DRIVE PARAMETERS
+ AH = 48h
+ DL = drive (80h-FFh)
+ DS:SI -> buffer for drive parameters (see #00273)
+Return: CF clear if successful
+ AH = 00h
+ DS:SI buffer filled
+ CF set on error
+ AH = error code (see #00234)
+BUGS: several different Compaq BIOSes incorrectly report high-numbered
+ drives (such as 90h, B0h, D0h, and F0h) as present, giving them the
+ same geometry as drive 80h; as a workaround, scan through disk
+ numbers, stopping as soon as the number of valid drives encountered
+ equals the value in 0040h:0075h
+ Dell machines using PhoenixBIOS 4.0 Release 6.0 fail to correctly
+ handle this function if the flag word at DS:[SI+2] is not 0000h
+ on entry
+SeeAlso: AH=08h,AH=41h,AH=49h,MEM 0040h:0075h
+
+Format of IBM/MS INT 13 Extensions drive parameters:
+Offset Size Description (Table 00273)
+ 00h WORD (call) size of buffer
+ (001Ah for v1.x, 001Eh for v2.x, 42h for v3.0)
+ (ret) size of returned data
+ 02h WORD information flags (see #00274)
+ 04h DWORD number of physical cylinders on drive
+ 08h DWORD number of physical heads on drive
+ 0Ch DWORD number of physical sectors per track
+ 10h QWORD total number of sectors on drive
+ 18h WORD bytes per sector
+---v2.0+ ---
+ 1Ah DWORD -> EDD configuration parameters (see #00278)
+ FFFFh:FFFFh if not available
+---v3.0 ---
+ 1Eh WORD signature BEDDh to indicate presence of Device Path info
+ 20h BYTE length of Device Path information, including signature and this
+ byte (24h for v3.0)
+ 21h 3 BYTEs reserved (0)
+ 24h 4 BYTEs ASCIZ name of host bus ("ISA" or "PCI")
+ 28h 8 BYTEs ASCIZ name of interface type
+ "ATA"
+ "ATAPI"
+ "SCSI"
+ "USB"
+ "1394" IEEE 1394 (FireWire)
+ "FIBRE" Fibre Channel
+ 30h 8 BYTEs Interface Path (see #00275)
+ 38h 8 BYTEs Device Path (see #00276)
+ 40h BYTE reserved (0)
+ 41h BYTE checksum of bytes 1Eh-40h (two's complement of sum, which makes
+ the 8-bit sum of bytes 1Eh-41h equal 00h)
+Note: if the size is less than 30 on call, the final DWORD will not be
+ returned by a v2.x implementation; similarly for the Device Path info
+SeeAlso: #00277,#03196
+
+Bitfields for IBM/MS INT 13 Extensions information flags:
+Bit(s) Description (Table 00274)
+ 0 DMA boundary errors handled transparently
+ 1 cylinder/head/sectors-per-track information is valid
+ 2 removable drive
+ 3 write with verify supported
+ 4 drive has change-line support (required if drive >= 80h is removable)
+ 5 drive can be locked (required if drive >= 80h is removable)
+ 6 CHS information set to maximum supported values, not current media
+ 15-7 reserved (0)
+Note: bits 4-6 are only valid if bit 2 is set
+SeeAlso: #00273
+
+Format of EDD v3.0 Interface Path:
+Offset Size Description (Table 00275)
+---ISA---
+ 00h WORD 16-bit base address
+ 02h 6 BYTEs reserved (0)
+---PCI---
+ 00h BYTE PCI bus number
+ 01h BYTE PCI device number
+ 02h BYTE PCI function number
+ 03h 5 BYTEs reserved (0)
+SeeAlso: #00273,#00276
+
+Format of EDD v3.0 Device Path:
+Offset Size Description (Table 00276)
+---ATA---
+ 00h BYTE flag: 00h = master, 01h = slave
+ 01h 7 BYTEs reserved (0)
+---ATAPI---
+ 00h BYTE flag: 00h = master, 01h = slave
+ 01h BYTE logical unit number
+ 02h 6 BYTEs reserved (0)
+---SCSI---
+ 00h BYTE logical unit number
+ 01h 7 BYTEs reserved (0)
+---USB---
+ 00h BYTE to be determined
+ 01h 7 BYTEs reserved (0)
+---IEEE1394---
+ 00h QWORD 64-bit FireWire General Unique Identifier (GUID)
+---FibreChannel---
+ 00h QWORD Word Wide Number (WWN)
+SeeAlso: #00273,#00275
+
+Format of Phoenix Enhanced Disk Drive Spec translated drive parameter table:
+Offset Size Description (Table 00277)
+ 00h WORD number of cylinders
+ 02h BYTE number of heads
+ 03h BYTE A0h (signature indicating translated table)
+ 04h BYTE number of physical sectors per track
+ 05h WORD starting write precompensation cylinder number
+ 07h BYTE reserved
+ 08h BYTE control byte (see #03198 at INT 41"DISK 0")
+ 09h WORD number of physical cylinders
+ 0Bh BYTE number of physical heads
+ 0Ch WORD cylinder number of landing zone
+ 0Eh BYTE number of logical sectors per track
+ 0Fh BYTE checksum
+Program: the Phoenix Enhanced Disk Drive Specification is an addition to the
+ IBM/MS INT 13 extensions
+SeeAlso: #00278,#03196
+
+Format of Phoenix Enhanced Disk Drive Spec Fixed Disk Parameter Table:
+Offset Size Description (Table 00278)
+ 00h WORD physical I/O port base address
+ 02h WORD disk-drive control port address
+ 04h BYTE drive flags (see #00279)
+ 05h BYTE proprietary information
+ bits 7-4 reserved (0)
+ bits 3-0: Phoenix proprietary (used by BIOS)
+ 06h BYTE IRQ for drive (bits 3-0; bits 7-4 reserved and must be 0)
+ 07h BYTE sector count for multi-sector transfers
+ 08h BYTE DMA control
+ bits 7-4: DMA type (0-2) as per ATA-2 specification
+ bits 3-0: DMA channel
+ 09h BYTE programmed I/O control
+ bits 7-4: reserved (0)
+ bits 3-0: PIO type (1-4) as per ATA-2 specification
+ 0Ah WORD drive options (see #00280)
+ 0Ch 2 BYTEs reserved (0)
+ 0Eh BYTE extension revision level (high nybble=major, low nybble=minor)
+ (currently 10h for v1.0 and 11h for v1.1-3.0)
+ 0Fh BYTE 2's complement checksum of bytes 00h-0Eh
+ 8-bit sum of all bytes 00h-0Fh should equal 00h
+Note: this structure is also called the Device Paramter Table Extension
+ (DPTE)
+SeeAlso: #00277
+
+Bitfields for Phoenix Enhanced Disk Drive Spec drive flags:
+Bit(s) Description (Table 00279)
+ 7 reserved (1)
+ 6 LBA enabled
+ 5 reserved (1)
+ 4 drive is slave
+ 3-0 reserved (0)
+SeeAlso: #00278,#00280
+
+Bitfields for Phoenix Enhanced Disk Drive Spec drive options:
+Bit(s) Description (Table 00280)
+ 0 fast PIO enabled
+ 1 fast DMA access enabled
+ 2 block PIO (multi-sector transfers) enabled
+ 3 CHS translation enabled
+ 4 LBA translation enabled
+ 5 removable media
+ 6 ATAPI device (CD-ROM)
+ 7 32-bit transfer mode
+---v1.1+ ---
+ 8 ATAPI device uses DRQ to signal readiness for packet command
+ (must be 0 if bit 6 is 0)
+ 10-9 translation type (must be 00 if bit 3 is 0)
+ 00 Phoenix bit-shifting translation
+ 01 LBA-assisted translation
+ 10 reserved
+ 11 proprietary translation
+---v3.0---
+ 11 Ultra DMA access enabled
+ 15-12 reserved (0)
+SeeAlso: #00278,#00279
+--------d-1349-------------------------------
+INT 13 - IBM/MS INT 13 Extensions - EXTENDED MEDIA CHANGE
+ AH = 49h
+ DL = drive number
+Return: CF clear if media has not changed
+ AH = 00h
+ CF set if media may have changed
+ AH = 06h (see #00234)
+Note: unlike AH=16h, any drive number may be specified
+SeeAlso: AH=16h,AH=41h"INT 13 Ext",AH=46h
+--------d-134A-------------------------------
+INT 13 - Bootable CD-ROM - INITIATE DISK EMULATION
+ AH = 4Ah
+ AL = 00h
+ DS:SI -> specification packet (see #00281)
+Return: CF clear if successful
+ CF set on error (drive will not be in emulation mode)
+ AX = return codes
+SeeAlso: AH=48h,AX=4B00h,AH=4Ch,AH=4Dh
+
+Format of Bootable CD-ROM Specification Packet:
+Offset Size Description (Table 00281)
+ 00h BYTE size of packet in bytes (13h)
+ 01h BYTE boot media type (see #00282)
+ 02h BYTE drive number
+ 00h floppy image
+ 80h bootable hard disk
+ 81h-FFh nonbootable or no emulation
+ 03h BYTE CD-ROM controller number
+ 04h DWORD Logical Block Address of disk image to emulate
+ 08h WORD device specification (see also #00282)
+ (IDE) bit 0: drive is slave instead of master
+ (SCSI) bits 7-0: LUN and PUN
+ bits 15-8: bus number
+ 0Ah WORD segment of 3K buffer for caching CD-ROM reads
+ 0Ch WORD load segment for initial boot image
+ if 0000h, load at segment 07C0h
+ 0Eh WORD number of 512-byte virtual sectors to load
+ (only valid for AH=4Ch)
+ 10h BYTE low byte of cylinder count (for INT 13/AH=08h)
+ 11h BYTE sector count, high bits of cylinder count (for INT 13/AH=08h)
+ 12h BYTE head count (for INT 13/AH=08h)
+SeeAlso: #00283,AH=08h
+
+Bitfields for Bootable CD-ROM boot media type:
+Bit(s) Description (Table 00282)
+ 3-0 media type
+ 0000 no emulation
+ 0001 1.2M diskette
+ 0010 1.44M diskette
+ 0011 2.88M diskette
+ 0100 hard disk (drive C:)
+ other reserved
+ 5-4 reserved (0)
+ 6 image contains ATAPI driver
+ 7 image contains SCSI driver(s)
+SeeAlso: #00281
+--------d-134B00-----------------------------
+INT 13 - Bootable CD-ROM - TERMINATE DISK EMULATION
+ AX = 4B00h
+ DL = drive number or 7Fh to terminate all emulations
+ DS:SI -> empty specification packet (see #00281)
+Return: CF clear if successful
+ CF set on error (drive will still be in emulation mode)
+ AX = return codes
+ DS:SI specification packet filled
+SeeAlso: AH=48h,AH=4Ah,AX=4B00h,AH=4Ch,AH=4Dh
+--------d-134B01-----------------------------
+INT 13 - Bootable CD-ROM - GET STATUS
+ AX = 4B01h
+ DL = drive number
+ DS:SI -> empty specification packet (see #00281)
+Return: CF clear if successful
+ CF set on error
+ AX = return codes
+ DS:SI specification packet filled
+Note: same as AX=4B00h, but does not terminate emulation
+SeeAlso: AH=48h,AH=4Ah,AX=4B00h,AH=4Ch,AH=4Dh
+--------d-134C-------------------------------
+INT 13 - Bootable CD-ROM - INITIATE DISK EMULATION AND BOOT
+ AH = 4Ch
+ AL = 00h
+ DS:SI -> specification packet (see #00281)
+Return: never, if successful
+ CF set (error while attempting to boot)
+ AX = error codes
+SeeAlso: AH=48h,AH=4Ah,AX=4B00h,AH=4Dh
+--------d-134D00-----------------------------
+INT 13 - Bootable CD-ROM - RETURN BOOT CATALOG
+ AX = 4D00h
+ DS:SI -> command packet (see #00283)
+Return: CF clear if successful
+ CF set on error
+ AX = return codes
+SeeAlso: AH=48h,AH=4Ah,AX=4B00h,AH=4Ch
+
+Format of Bootable CD-ROM "get boot catalog" command packet:
+Offset Size Description (Table 00283)
+ 00h BYTE size of packet in bytes (08h)
+ 01h BYTE number of sectors of boot catalog to read
+ 02h DWORD -> buffer for boot catalog
+ 06h WORD first sector in boot catalog to transfer
+SeeAlso: #00281
+--------d-134E-------------------------------
+INT 13 - IBM/MS INT 13 Extensions v2.1+ - SET HARDWARE CONFIGURATION
+ AH = 4Eh
+ AL = function
+ 00h enable prefetch
+ 01h disable prefetch
+ 02h set maximum PIO transfer mode
+ 03h set PIO mode 0
+ 04h set default PIO transfer mode
+ 05h enable INT 13h DMA maximum mode
+ 06h disable INT 13h DMA
+ DL = drive number
+Return: CF clear if successful
+ AH = 00h
+ AL = status
+ 00h command was safe (only affected specified drive)
+ 01h other devices are affected
+ CF set on error
+ AH = error code (see #00234)
+Note: DMA and PIO modes are mutually exclusive, so selecting DMA disables
+ PIO (for either the specified device or all devices on that
+ controller), and selecting PIO disables DMA
+SeeAlso: AH=41h"INT 13 Extensions",AX=5001h"Enhanced Disk Drive"
+--------d-135001-----------------------------
+INT 13 - Enhanced Disk Drive Spec v3.0 - SEND PACKET COMMAND
+ AX = 5001h
+ DL = drive number
+ ES:BX -> command packet (see #00284)
+Return: CF clear if successful
+ AH = 00h
+ CF set on error
+ AH = error code
+Desc: send data to and from a serial packet-oriented device, such as IEEE1394
+ and USB
+SeeAlso: AH=41h"INT 13 Extensions",AH=4Eh
+
+Format of Enhanced Disk Drive Spec v3.0 command packet:
+Offset Size Description (Table 00284)
+ 00h WORD signature B055h
+ 02h BYTE length of packet in bytes
+ 03h BYTE reserved (0)
+ 04h N BYTEs formatted packet data
+--------v-135001------------------------
+INT 13 - VIRUS - "Andropinis" - INSTALLATION CHECK
+ AX = 5001h
+Return: AX = 0150h if resident
+SeeAlso: AX=FD50h"VIRUS",INT 21/AX=0B56h
+--------v-135342CX0001-----------------------
+INT 13 - ScanBoot - INSTALLATION CHECK
+ AX = 5342h ("SB")
+ CX = 0001h
+ DX = 0000h
+Return: CF clear if ScanBoot installed
+ AX = 0000h
+ CX = serial number ("SW" if shareware release)
+ DX = version
+ BX,SI,ES destroyed
+Program: ScanBoot is a virus-detection TSR by PanSoft
+--------d-135501-----------------------------
+INT 13 - Seagate ST01/ST02 - Inquiry
+ AX = 5501h
+ DH = number of bytes to transfer
+ DL = drive ID (80h, 81h, ...)
+ ES:BX -> buffer for results
+Return: ES:BX buffer filled with the Inquiry results
+Notes: the ST01/ST02 BIOS does not return any success/failure indication,
+ so all commands must be assumed to have been successful
+ the ST01/ST02 BIOS always maps its drives after the previous BIOS
+ drives without changing the BIOS drive count at 0040h:0075h
+ this command is identical to the SCSI Inquiry command
+--------d-135502-----------------------------
+INT 13 - Seagate ST01/ST02 - RESERVED
+ AX = 5502h
+--------d-135503-----------------------------
+INT 13 - Seagate ST01/ST01 - Set Device Type Qualifier (DTQ)
+ AX = 5503h
+ DH = DTQ byte (see #00285)
+ DL = drive ID (80h, 81h, ...)
+Return: nothing
+
+Bitfields for DTQ byte:
+Bit(s) Description (Table 00285)
+ 7 reserved
+ 6 SCSI drive attached
+ 5 reserved
+ 4 selected drive is ST225N/NP (Paired)
+ 3 selected drive is ST225N
+ 2 Host Adapter checks parity on the selected drive
+ 1 selected drive has been installed
+ 0 Seagate installation software present
+--------d-135504-----------------------------
+INT 13 U - Seagate - ??? - RETURN IDENTIFICATION
+ AX = 5504h
+ DX = drive (bit 7 set for hard disk)
+Return: CF clear if successful
+ AX = 4321h if ST01/ST02h
+ AX = 4322h if ??? Seagate controller
+ CF set on error
+SeeAlso: AX=5505h,AX=5514h
+--------d-135504-----------------------------
+INT 13 - Seagate ST01/ST02 - RETURN IDENTIFICATION
+ AX = 5504h
+ DL = drive ID (80h, 81h, ...)
+Return: AX = 4321h
+ BL = selected drive number (00h, 01h)
+ BH = number of drives attached to Host Adapter (max. 2)
+--------d-135505-----------------------------
+INT 13 - Seagate - ??? - PARK HEADS
+ AX = 5505h
+ DX = drive (bit 7 set for hard disk)
+Return: CF clear if successful
+ CF set on error
+SeeAlso: AX=5504h,AX=5515h
+--------d-135505-----------------------------
+INT 13 - Seagate ST01/ST02 - PARK HEADS
+ AX = 5505h
+ DL = drive ID (80h, 81h, ...)
+ DH = subfunction
+ 00h park heads (SCSI Stop command)
+ 01h un-park heads (SCSI Start command)
+Return: nothing
+--------d-135506-----------------------------
+INT 13 - Seagate ST01/ST02 - SCSI Bus Parity
+ AX = 5506h
+ DL = drive ID (80h, 81h, ...)
+ DH = subfunction
+ 00h disable parity check
+ 01h enable parity check
+ 02h return current parity setting
+Return: AL = status
+ 00h parity checking disabled
+ 01h parity checking enabled
+--------d-135507-----------------------------
+INT 13 - Seagate ST01/ST02 - RESERVED FUNCTIONS
+ AX = 5507h to 550Dh
+Note: officially listed as "reserved"
+--------d-135514-----------------------------
+INT 13 U - Seagate - ???
+ AX = 5514h
+ DX = drive (bit 7 set for hard disk)
+Return: CF clear if successful
+ CF set on error
+ AX = return value (FEBEh,FEBFh,FEDAh,FEDBh)
+SeeAlso: AX=5504h,AX=5515h
+--------d-135515-----------------------------
+INT 13 U - Seagate - PARK HEADS???
+ AX = 5515h
+ DX = drive (bit 7 set for hard disk)
+Return: CF clear if successful
+ CF set on error
+Note: appears to be identical to AX=5505h
+SeeAlso: AX=5504h,AX=5505h
+--------d-1359-------------------------------
+INT 13 - SyQuest - Generic SCSI pass through
+ AH = 59h
+ CX = HOST_ID, 0-based
+ DX = 80h
+ ES:BX pointer to SCSI structure (see #00286)
+Return: CF clear
+ AH = 95h
+SeeAlso: AH=12h"SyQuest",AH=13h"SyQuest",AH=1Fh"SyQuest"
+
+Format of SyQuest SCSI structure:
+Offset Size Description (Table 00286)
+ 00h WORD opcode (see #00287)
+ 02h BYTE target's SCSI ID
+ 03h BYTE target's logical unit number
+ 04h BYTE data direction (00h no data xfer, 01h data in, FFh data out)
+ 05h BYTE host status
+ 00h successful
+ 01h selection time out
+ 02h data over-run or under-run
+ 06h BYTE target status at command completion
+ 00h successful
+ 02h check status
+ 08h busy
+ 07h BYTE command data block length
+ 08h DWORD request data length
+ 0Ch DWORD result data length (actual length of data transferred)
+ 10h DWORD -> CDB (see #03236,#03237,#03238)
+ 14h DWORD -> data buffer
+Note: The handler does not perform a 'Request Sense' command if there was an
+ error
+
+(Table 00287)
+Values for SCSI opcode:
+ 00h verify interface
+ clears carry flag and returns if function is available
+ 01h returns the ID of the INT 13h Handler in a NULL terminated string of
+ length less than 40 byte including the terminator.
+ The string is stored in the buffer pointed by p_buf.
+ 02h device mapping info. The caller provides a one byte buffer.
+ The handler stores the Int 13h Device ID (80h or above) in the buffer.
+ It stores 0 if that target does not exists.
+ 03h execute SCSI command
+ 04h device reset
+ 05h SCSI bus reset
+SeeAlso: #00286
+--------d-1370-------------------------------
+INT 13 - Priam EDVR.SYS DISK PARTITIONING SOFTWARE???
+ AH = 70h
+ ???
+Return: ???
+Note: Priam's EDISK.EXE (FDISK replacement) and EFMT.EXE (low-level
+ formatting program) make this call, presumably to EDVR.SYS (the
+ partitioning driver)
+SeeAlso: AH=ADh
+----------1375-------------------------------
+INT 13 - ???
+ AH = 75h
+ ???
+Return: AH = ???
+ ???
+Note: intercepted by PC-Cache (v5.1 only)
+----------1376-------------------------------
+INT 13 - ???
+ AH = 76h
+ ???
+Return: AH = ???
+ ???
+Note: intercepted by PC-Cache (v5.1 only)
+--------c-137B00-----------------------------
+INT 13 - NOW! v3.05 - GET INFORMATION
+ AX = 7B00h
+ CX:DX -> 1F8h-byte buffer for information record (see #00288)
+Return: AX = 0000h
+ BX = segment of main resident code
+ ES = ???
+Program: NOW! is a disk cache by Vertisoft Systems, Inc.
+SeeAlso: AX=7B02h,AH=EFh
+
+Format of NOW! information record:
+Offset Size Description (Table 00288)
+ 00h 80 BYTEs name of directory from which NOW! was started
+ 50h 424 BYTEs ???
+ 81h ? BYTEs array of bytes for ???
+ F7h 250 BYTEs array of 25 entries, one per drive???
+ Offset Size Description
+ 00h 2 BYTEs ???
+ 02h WORD ???
+ 04h WORD ???
+ 06h 4 BYTEs ???
+1F1h 7 BYTEs ???
+--------c-137B01-----------------------------
+INT 13 - NOW! v3.05 - ???
+ AX = 7B01h
+Return: DX = segment of ???
+SeeAlso: AX=7B00h
+--------c-137B02-----------------------------
+INT 13 - NOW! v3.05 - SET INFORMATION
+ AX = 7B02h
+ BX = segment of ??? (10h above a PSP)
+ CX:DX -> 1F8h-byte information record (see #00288)
+Return: ???
+Program: NOW! is a disk cache by Vertisoft Systems, Inc.
+Note: NOW! grabs the INT 24h value from the PSP reached via the segment in
+ BX
+SeeAlso: AX=7B00h
+--------c-137B03-----------------------------
+INT 13 - NOW! v3.05 - ???
+ AX = 7B03h
+ ???
+Return: ???
+SeeAlso: AX=7B00h,AX=7B04h
+--------c-137B04-----------------------------
+INT 13 - NOW! v3.05 - ???
+ AX = 7B04h
+ ???
+Return: ???
+SeeAlso: AX=7B03h
+--------c-137B05-----------------------------
+INT 13 - NOW! v3.05 - GET DISK ACCESSES???
+ AX = 7B05h
+Return: BX:AX = number of physical accesses???
+ DX:CX = total disk accesses???
+SeeAlso: AX=7B00h,AX=7B06h
+--------c-137B06-----------------------------
+INT 13 - NOW! v3.05 - GET ???
+ AX = 7B06h
+ BX = ???
+Return: AX = 0000h
+ BX = ???
+SeeAlso: AX=7B05h,AX=7B07h
+--------c-137B07-----------------------------
+INT 13 - NOW! v3.05 - GET ???
+ AX = 7B07h
+Return: AX = ???
+ BX = ???
+ CX = ???
+ DX = ???
+SeeAlso: AX=7B06h
+--------c-137B08-----------------------------
+INT 13 - NOW! v3.05 - ???
+ AX = 7B08h
+ CX = ??? (default 00h)
+Return: ???
+SeeAlso: AX=7B00h
+--------c-1380--CX6572-----------------------
+INT 13 - FAST! v4.02+ - API
+ AH = 80h
+ CX = 6572h
+ DX = 1970h
+ ES:BX -> request packet (see #00290)
+ AL = function number (see #00289)
+Return: AH = status (except function 06h)
+ 00h if successful
+ 01h invalid function
+ 05h not supported by the installed variant
+ CF clear if successful
+ CF set on error
+ AL may be destroyed
+Program: FAST! is a disk cache by Future Computing Systems and marketed by
+ BLOC Publishing Corp.
+SeeAlso: AX=8001h,AX=8006h,AX=8007h
+Index: hotkeys;FAST!
+
+(Table 00289)
+Values for FAST! function:
+ 01h get cache information (see AX=8001h)
+ 04h disable cache
+ 05h enable cache and reset statistics
+ 06h installation check (see AX=8006h)
+ 07h unhook interrupts (see AX=8007h)
+ 09h flush cache
+ 0Ah (v4.02+) enable staged writes
+ 0Bh (v4.02+) disable staged writes
+ 0Ch (v4.02+) enable beep on flush
+ 0Dh (v4.02+) disable beep on flush
+ 0Eh ???
+ 0Fh ???
+ 10h (v4.12+) enable hotkeys
+ 11h (v4.12+) disable hotkeys
+ 12h (v4.13+) set idle delay
+ 13h (v4.13+) set flush dirty percentage
+ 14h (v5.00+) enable mouse checks
+ 15h (v5.00+) disable mouse checks
+ 16h (v5.00d+) reduce cache size to minimum
+ 17h (v5.00d+) increase cache size to maximum
+
+Format of FAST! request packet:
+Offset Size Description (Table 00290)
+ 00h DWORD pointer to 19-byte signature string (see #00291)
+ 04h DWORD pointer to buffer for data (if needed by function)
+
+(Table 00291)
+Values for FAST! v4.04-v5.03 signature string:
+ 13h 07h 06h 08h 11h 18h 0Fh 0Eh 02h 18h 13h 08h 0Bh 08h 01h 00h 04h 08h 15h
+--------c-138001CX6572-----------------------
+INT 13 - FAST! v4.02+ - GET CACHE INFORMATION
+ AX = 8001h
+ CX = 6572h
+ DX = 1970h
+ ES:BX -> request packet (see #00292)
+Return: AH = 00h if successful
+SeeAlso: AH=80h,AX=8006h
+
+Format of FAST! request packet:
+Offset Size Description (Table 00292)
+ 00h DWORD -> 19-byte signature string (see #00291)
+ 04h DWORD -> buffer for cache information (see #00293)
+
+Format of FAST! cache information (v5.00-5.03):
+Offset Size Description (Table 00293)
+ 00h WORD binary version number of FAST! (v5.00 = 01F4h)
+ 02h BYTE revision letter (61h = X.XXa, 62h = X.XXb, etc.)
+ 03h BYTE FAST! variant
+ (01h = FASTE, 02h = FASTX BIOS, 04h = FASTC, 20h = FASTX XMS)
+ 04h DWORD total number of read requests
+ 08h DWORD number of physical disk reads
+ 0Ch DWORD grabbed hash buckets
+ 10h DWORD "st_386mem"
+ 14h DWORD total number of writes (only counted when staging enabled)
+ 18h DWORD number of physical disk writes (only when staging enabled)
+ 1Ch DWORD number of write errors while flushing cache
+ 20h WORD flags1 (see #00294)
+ 22h WORD flags
+ bit 0: ???
+ bit 1: staged writes enabled
+ 24h WORD ???
+ 26h WORD maximum cache size in KB
+ 28h WORD minimum cache size in KB
+ 2Ah WORD segment of first cache buffer (FASTC)
+ segment of EMS page frame (FASTE)
+ XMS handle (FASTX XMS)
+ 2Ch WORD number of hash buckets containing no entries
+ 2Eh WORD number of hash buckets containing one entry
+ 30h WORD number of hash buckets containing two entries
+ 32h WORD number of hash buckets containing three entries
+ 34h WORD number of hash buckets containing four entries
+ 36h WORD number of hash buckets containing five entries
+ 38h WORD maximum contiguous sectors
+ 3Ah WORD hash factor
+ 3Ch WORD number of paragraphs of memory used below 1M
+ 3Eh WORD entries per hash bucket
+ 40h WORD idle delay in seconds
+ 42h 2 BYTEs ???
+ 44h WORD staged write threshold percentage
+ 46h 2 BYTEs ???
+ 48h WORD number of dirty sectors
+ 4Ah WORD number of staged write buffers
+ 4Ch WORD current cache size in KB
+ 4Eh WORD beep frequency in Hz
+ 50h WORD ???
+ 52h WORD ???
+
+Bitfields for FAST! flags1:
+Bit(s) Description (Table 00294)
+ 0 beep on flush
+ 3 hotkeys enabled
+ 4 mouse idle check enabled
+ 8 caching enabled
+ 13 ???
+--------c-138006CX6572-----------------------
+INT 13 - FAST! v4.02+ - INSTALLATION CHECK
+ AX = 8006h
+ CX = 6572h
+ DX = 1970h
+ ES:BX -> request packet (see #00295)
+Return: AX = 1965h if installed
+SeeAlso: AH=80h,AX=8001h,AX=8007h
+
+Format of FAST! request packet:
+Offset Size Description (Table 00295)
+ 00h DWORD -> 19-byte signature string (see #00291)
+--------c-138007CX6572-----------------------
+INT 13 - FAST! v4.02+ - UNHOOK INTERRUPTS
+ AX = 8007h
+ CX = 6572h
+ DX = 1970h
+ ES:BX -> request packet (see #00296)
+Return: AX = 1965h if installed
+SeeAlso: AH=80h,AX=8006h
+Index: uninstall;FAST!
+
+Format of FAST! request packet:
+Offset Size Description (Table 00296)
+ 00h DWORD -> 19-byte signature string (see #00291)
+--------c-1381--SI4358-----------------------
+INT 13 - Super PC-Kwik v3.20+ - ???
+ AH = 81h
+ SI = 4358h
+ ???
+Return: ???
+Note: PC Tools PC-Cache 5.x and Qualitas Qcache 4.00 are OEM versions of
+ Super PC-Kwik, and thus support this call (PC-Cache v5.1 corresponds
+ to PC-Kwik v3.20 and PC-Cache v5.5 to PC-Kwik v3.27)
+ returns immediately in PC-Cache v5.x
+Index: PC-Cache|Qualitas Qcache
+--------c-1382--SI4358-----------------------
+INT 13 - Super PC-Kwik v3.20+ - ???
+ AH = 82h
+ SI = 4358h
+ ???
+Return: AL = ???
+Note: PC Tools PC-Cache 5.x and Qualitas Qcache 4.00 are OEM versions of
+ Super PC-Kwik, and thus support this call
+SeeAlso: AH=84h
+Index: PC-Cache|Qualitas Qcache
+--------c-1383--SI4358-----------------------
+INT 13 - Super PC-Kwik v3.20+ - ???
+ AH = 83h
+ SI = 4358h
+ AL = ???
+ ES:BX -> ???
+ ???
+Return: ???
+Note: PC Tools PC-Cache 5.x and Qualitas Qcache 4.00 are OEM versions of
+ Super PC-Kwik, and thus support this call
+SeeAlso: AH=85h
+Index: PC-Cache|Qualitas Qcache
+--------c-1384--SI4358-----------------------
+INT 13 - Super PC-Kwik v3.20+ - ???
+ AH = 84h
+ SI = 4358h
+ AL = ???
+ ???
+Return: AL = ???
+Note: PC Tools PC-Cache 5.x and Qualitas Qcache 4.00 are OEM versions of
+ Super PC-Kwik, and thus support this call
+SeeAlso: AH=82h
+Index: PC-Cache|Qualitas Qcache
+--------c-1385--SI4358-----------------------
+INT 13 - Super PC-Kwik v3.20+ - ???
+ AH = 85h
+ SI = 4358h
+ AL = ???
+ DL = ???
+ ???
+Return: ???
+Note: PC Tools PC-Cache 5.x and Qualitas Qcache 4.00 are OEM versions of
+ Super PC-Kwik, and thus support this call (PC-Cache v5.1 corresponds
+ to PC-Kwik v3.20)
+SeeAlso: AH=83h
+Index: PC-Cache|Qualitas Qcache
+--------c-1386--SI4358-----------------------
+INT 13 - Super PC-Kwik v4.00+ - ???
+ AH = 86h
+ SI = 4358h
+ ???
+Return: ???
+Note: Qualitas Qcache v4.00 is an OEM version of Super PC-Kwik v4.00, and
+ thus supports this call
+Index: Qualitas Qcache
+--------c-1387--SI4358-----------------------
+INT 13 - Super PC-Kwik v4.00+ - ???
+ AH = 87h
+ SI = 4358h
+ ???
+Return: AH = status??? (00h)
+ CX = ???
+ DX = ??? (0000h)
+Note: Qualitas Qcache v4.00 is an OEM version of Super PC-Kwik v4.00, and
+ thus supports this call
+Index: Qualitas Qcache
+--------c-1388--SI4358-----------------------
+INT 13 - Super PC-Kwik v4.00+ - ???
+ AH = 88h
+ SI = 4358h
+ ???
+Return: AH = status??? (00h)
+ CX = ???
+ DX = ??? (0000h)
+Note: Qualitas Qcache v4.00 is an OEM version of Super PC-Kwik v4.00, and
+ thus supports this call
+Index: Qualitas Qcache
+--------c-1389--SI4358-----------------------
+INT 13 - Super PC-Kwik v5.10+ - ???
+ AH = 89h
+ SI = 4358h
+ ???
+Return: ???
+--------c-138A--SI4358-----------------------
+INT 13 - Super PC-Kwik v5.10+ - ???
+ AH = 8Ah
+ SI = 4358h
+ ???
+Return: ???
+--------c-138EED-----------------------------
+INT 13 - HyperDisk v4.01+ - ???
+ AX = 8EEDh
+ ???
+Return: ???
+Program: HyperDisk is a shareware disk cache by HyperWare (Roger Cross)
+SeeAlso: AX=8EEEh,AX=8EEFh,AH=EEh,INT 2F/AX=DF00h
+--------c-138EEE-----------------------------
+INT 13 - HyperDisk v4.01+ - ???
+ AX = 8EEEh
+Return: CF set
+ AX = CS of HyperDisk resident code
+ ???
+Note: identical to AX=8EEFh in HYPERDKX v4.21-4.30
+SeeAlso: AX=8EEDh,AX=8EEFh,AH=EEh
+--------c-138EEF-----------------------------
+INT 13 - HyperDisk v4.01+ - ???
+ AX = 8EEFh
+Return: CF set
+ AX = CS of HyperDisk resident code
+ ???
+Note: identical to AX=8EEEh in HYPERDKX v4.21-4.30
+SeeAlso: AX=8EEDh,AX=8EEEh,AH=EEh
+--------c-1392--SI4358-----------------------
+INT 13 - Super PC-Kwik v5.10+ - ???
+ AH = 92h
+ SI = 4358h
+ ???
+Return: AH = status??? (00h)
+ DL = ???
+SeeAlso: AH=93h
+--------c-1393--SI4358-----------------------
+INT 13 - Super PC-Kwik v5.10+ - ???
+ AH = 93h
+ SI = 4358h
+ ???
+Return: AH = status??? (00h)
+ AL = ???
+SeeAlso: AH=92h
+--------c-1394--SI4358-----------------------
+INT 13 - Super PC-Kwik v5.10+ - ???
+ AH = 94h
+ SI = 4358h
+ ???
+Return: ???
+--------c-1395--SI4358-----------------------
+INT 13 - Super PC-Kwik v5.10+ - ???
+ AH = 95h
+ SI = 4358h
+ ???
+Return: AH = status??? (00h)
+ DX = ???
+--------c-1396--SI4358-----------------------
+INT 13 - Super PC-Kwik v5.10+ - ???
+ AH = 96h
+ SI = 4358h
+ AL = ??? (01h)
+ BX = ??? (0790h)
+ DL = ???
+Return: AH = status??? (00h)
+ DX = ???
+--------c-1397--SI4358-----------------------
+INT 13 - Super PC-Kwik v5.10+ - ???
+ AH = 97h
+ SI = 4358h
+ ???
+Return: ???
+--------c-1398--SI4358-----------------------
+INT 13 - Super PC-Kwik v5.10+ - ???
+ AH = 98h
+ SI = 4358h
+ ???
+Return: ???
+--------c-1399--SI4358-----------------------
+INT 13 - Super PC-Kwik v5.10+ - ???
+ AH = 99h
+ SI = 4358h
+ ???
+Return: ???
+--------c-139A--SI4358-----------------------
+INT 13 - Super PC-Kwik v5.10+ - ???
+ AH = 9Ah
+ SI = 4358h
+ ???
+Return: ???
+--------c-139B--SI4358-----------------------
+INT 13 - Super PC-Kwik v5.10+ - ???
+ AH = 9Bh
+ SI = 4358h
+ ???
+Return: ???
+--------c-139C--SI4358-----------------------
+INT 13 - Super PC-Kwik v5.10+ - ???
+ AH = 9Ch
+ SI = 4358h
+ ???
+Return: ???
+Note: functions 9Ch and 9Dh are the only ones which are fully reentrant; all
+ other PC-Kwik API calls (INT 13/81h-B0h) return AX=0200h and CF clear
+ if a previous call is still in progress
+--------c-139D--SI4358-----------------------
+INT 13 - Super PC-Kwik v5.10+ - ???
+ AH = 9Dh
+ SI = 4358h
+ ???
+Return: ???
+--------c-13A0--SI4358-----------------------
+INT 13 - Super PC-Kwik v3.20+ - GET RESIDENT CODE SEGMENT
+ AH = A0h
+ SI = 4358h
+Return: AX = segment of resident code
+Note: PC Tools PC-Cache 5.x and Qualitas Qcache 4.00 are OEM versions of
+ Super PC-Kwik, and thus support this call (note that PC-Cache v5.5
+ corresponds to PC-Kwik v3.27)
+SeeAlso: INT 16/AX=FFA5h/CX=1111h
+Index: PC-Cache|Qualitas Qcache
+--------c-13A1--SI4358-----------------------
+INT 13 - Super PC-Kwik v3.20+ - FLUSH CACHE
+ AH = A1h
+ SI = 4358h
+Return: CF clear
+ AH = 00h (v5.10)
+Notes: PC Tools PC-Cache 5.x and Qualitas Qcache 4.00 are OEM versions of
+ Super PC-Kwik, and thus support this call (note that PC-Cache v5.1
+ corresponds to PC-Kwik v3.20)
+ this function is one out of several cache flush calls issued by the
+ PTS-DOS 6.51 and S/DOS 1.0 kernel before rebooting.
+SeeAlso: INT 16/AX=FFA5h/CX=FFFFh
+Index: PC-Cache|Qualitas Qcache
+--------c-13A2--SI4358-----------------------
+INT 13 - Super PC-Kwik v3.20+ - ???
+ AH = A2h
+ SI = 4358h
+ ???
+Return: ???
+Note: PC Tools PC-Cache 5.x and Qualitas Qcache 4.00 are OEM versions of
+ Super PC-Kwik, and thus support this call (note that PC-Cache v5.1
+ corresponds to PC-Kwik v3.20)
+Index: PC-Cache|Qualitas Qcache
+--------c-13A3--SI4358-----------------------
+INT 13 U - Super PC-Kwik v5.10+ - DISABLE CACHE
+ AH = A3h
+ SI = 4358h
+Return: CF clear
+SeeAlso: AH=A4h
+--------c-13A4--SI4358-----------------------
+INT 13 U - Super PC-Kwik v5.10+ - ENABLE CACHE
+ AH = A4h
+ SI = 4358h
+Return: CF clear
+SeeAlso: AH=A3h
+--------c-13A5--SI4358-----------------------
+INT 13 CU - Super PC-Kwik v5.10+ - PROGRAM TERMINATION NOTIFICATION
+ AH = A5h
+ SI = 4358h
+Return: AX = ???
+ SI = ???
+Notes: called and used internally by Super PC-Kwik when a program terminates
+ via INT 21/AH=00h, INT 21/AH=31h, or INT 21/AH=4Ch
+ this call is not supported by Qualitas Qcache 4.00
+Index: PC-Cache
+SeeAlso: AH=A6h,AH=A9h,INT 21/AH=00h,INT 21/AH=31h,INT 21/AH=4Ch
+--------c-13A6--SI4358-----------------------
+INT 13 CU - Super PC-Kwik v5.10+ - PROGRAM LOAD NOTIFICATION
+ AH = A6h
+ SI = 4358h
+ DS:DX -> ASCIZ program name
+ ES:BX -> EXEC data block (see #01590 at INT 21/AH=4Bh)
+Return: ???
+Note: called and used internally by Super PC-Kwik when a program is loaded
+ with INT 21/AX=4B00h
+SeeAlso: AH=A5h,AH=A9h,INT 21/AH=4Bh
+--------c-13A7--SI4358-----------------------
+INT 13 CU - Super PC-Kwik 5.1 - ???
+ AH = A7h
+ SI = 4358h
+Return: ???
+Note: called and used internally by Super PC-Kwik on some INT 21 calls
+SeeAlso: AH=A5h,AH=A6h,AH=A8h
+--------v-13A759-----------------------------
+INT 13 U - Novell DOS 7 - SDRes v27.03 - ???
+ AX = A759h
+Return: AX = 59A7h if installed
+ DX:BX -> ??? data
+Program: SDRes is the resident portion of the Search&Destroy antiviral by
+ Fifth Generation Systems, as bundled with Novell DOS 7
+SeeAlso: INT 21/AH=0Eh/DL=ADh
+--------c-13A8--SI4358-----------------------
+INT 13 CU - Super PC-Kwik 5.1 - ???
+ AH = A8h
+ SI = 4358h
+Return: ???
+Note: called and used internally by Super PC-Kwik on some INT 21 calls
+SeeAlso: AH=A5h,AH=A6h,AH=A7h
+--------c-13A9--SI4358-----------------------
+INT 13 CU - Super PC-Kwik 5.1 - EXITCODE RETRIEVAL NOTIFICATION
+ AH = A9h
+ SI = 4358h
+Return: ???
+Note: called and used internally by Super PC-Kwik when an application issues
+ INT 21/AH=4Dh
+SeeAlso: AH=A5h,AH=A6h,INT 21/AH=4Dh
+--------c-13AA--SI4358-----------------------
+INT 13 - Super PC-Kwik v4+ - ???
+ AH = AAh
+ SI = 4358h
+ ???
+Return: ???
+Note: Qualitas Qcache is an OEM version of Super PC-Kwik, and thus supports
+ this call
+--------c-13AB--SI4358-----------------------
+INT 13 - Super PC-Kwik v4+ - ???
+ AH = ABh
+ SI = 4358h
+ ???
+Return: ???
+Note: Qualitas Qcache is an OEM version of Super PC-Kwik, and thus supports
+ this call
+--------c-13AC--SI4358-----------------------
+INT 13 - Super PC-Kwik v4+ - ???
+ AH = ACh
+ SI = 4358h
+ ???
+Return: ???
+Note: Qualitas Qcache is an OEM version of Super PC-Kwik, and thus supports
+ this call
+--------d-13AD-------------------------------
+INT 13 - Priam HARD DISK CONTROLLER???
+ AH = ADh
+ ???
+Return: ???
+Note: this call is made from Priam's EFMT.EXE (low-level formatter), probably
+ to check the ROM type on the controller for their hard disk kits
+SeeAlso: AH=70h
+--------c-13AD--SI4358-----------------------
+INT 13 - Super PC-Kwik v4+ - ???
+ AH = ADh
+ SI = 4358h
+ ???
+Return: ???
+Note: Qualitas Qcache is an OEM version of Super PC-Kwik, and thus supports
+ this call
+--------c-13AE--SI4358-----------------------
+INT 13 - Super PC-Kwik v5.10+ - ???
+ AH = AEh
+ SI = 4358h
+ ???
+Return: ???
+--------c-13B0--SI4358-----------------------
+INT 13 - Super PC-Kwik v3.20+ - ???
+ AH = B0h
+ SI = 4358h
+ ???
+Return: ???
+Note: PC Tools PC-Cache 5.x is an OEM version of Super PC-Kwik, and thus
+ supports this call; Qualitas Qcache does not support it
+Index: PC-Cache
+----------13BF00-----------------------------
+INT 13 - Mylex/Adaptec??? - ???
+ AX = BF00h
+ BX = PCI address???
+ DI = 0000h ???
+ DL = drive number (80h = C:)
+Return: ???
+Note: some poorly-commented code using this function notes that there had
+ been a workaround for some Mylex BIOS bug by setting DL to 8Fh
+--------d-13E000-----------------------------
+INT 13 - XBIOS - COMMAND
+ AX = E000h
+ CX = 0
+ DL = drive number (80h,81h,82h,83h)
+ ES:BX = pointer to XBIOS Command Block (see #00297)
+Return: CF clear if successful
+ CX = 1234h XBIOS Signature
+ CF set on error
+Program: XBIOS is a driver in some versions of Disk Manager that is
+ loaded from the disk MBR, replacing the ROM BIOS disk support
+ e.g. adding LBA mode support, and read/write multiple.
+SeeAlso: AH=F9h"SWBIOS"
+
+Format of XBIOS Command Block:
+Offset Size Description (Table 00297)
+ 00h BYTE function
+ 0Eh Get XBIOS Configuration Information
+ Return: buffer points to Ontrackr_Ref_Data structure
+ (see #00298)
+ 01h BYTE reserved (must be zero before function call)
+ 02h DWORD buffer pointer - Input or output depending on opcode
+SeeAlso: #00298,#00299
+
+Format of Ontrackr_Ref_Data structure:
+Offset Size Description (Table 00298)
+ 00h WORD Size of structure (33h)
+ 02h BYTE VxD Chain mode
+ 03h 12 BYTEs Drive 1: Ontrackr_VxD_Data structure (see #00299)
+ 0Fh 12 BYTEs Drive 2: Ontrackr_VxD_Data structure
+ 1Bh 12 BYTEs Drive 3: Ontrackr_VxD_Data structure
+ 27h 12 BYTEs Drive 4: Ontrackr_VxD_Data structure (see #00299)
+SeeAlso: #00297,#00299
+
+Format of Ontrackr_VxD_Data structure:
+Offset Size Description (Table 00299)
+ 00h BYTE INT 13h drive number
+ 01h DWORD Delta skew value
+ 05h BYTE Physical heads (Word 3 of Identify Data)
+ 06h BYTE Physical sectors per track (Word 6 of Identify Data)
+ 07h BYTE Multiple Block Size (Blocking factor)
+ 08h BYTE Read/Write Multiple disable flags
+ 00001000b drive supports r/w multiple
+ 00000100b do not use read multiple
+ 00000010b do not use write multiple
+ 09h WORD Base port address (1F0/170)
+ 0Bh BYTE Hardware interrupt channel (14/15)
+SeeAlso: #00298
+--------v-13EC00-----------------------------
+INT 13 - VIRUS - "Tiso" - INSTALLATION CHECK
+ AX = EC00h
+Return: CF clear if installed
+SeeAlso: AH=F2h,INT 12/AX=4350h/BX=4920h
+--------d-13EE-------------------------------
+INT 13 - SWBIOS - SET 1024-CYLINDER FLAG
+ AH = EEh
+ DL = drive number (80h, 81h)
+Return: CF clear
+ AH = 00h
+Program: SWBIOS is a TSR by Ontrack Computer Systems
+Desc: the following INT 13 call will add 1024 to the specified cylinder
+ number to get the actual cylinder number desired
+Notes: the flag is cleared by all INT 13 calls except AH=EEh and AH=EFh
+ Disk Manager also supports these calls
+ this function is also supported by HyperDisk v4.01+ and PC-Cache v5.5+,
+ in order to allow caching of drives using SWBIOS to access more than
+ 1024 cylinders
+ for software which supports that call, this function is equivalent to
+ calling AH=EFh with CX=0400h
+SeeAlso: AH=F9h,AH=FEh,INT 16/AX=FFA5h/CX=1111h,INT 2F/AX=DF00h
+Index: PC-Cache;huge disks|Disk Manager
+--------c-13EF-------------------------------
+INT 13 - Ontrack Drive Rocket - SET CYLINDER OFFSET
+ AH = EFh
+ CX = cylinder offset for next INT 13 call
+ DL = drive number (80h, 81h)
+Return: CF clear
+ AH = 00h
+Program: Drive Rocket is a drive accelerator by Ontrack Computer Systems for
+ IDE drives supporting the read multiple and write multiple commands
+Desc: the following INT 13 call will add the number given by this call to
+ the specified cylinder to get the actual cylinder number, then reset
+ the offset to zero
+Note: this function is also supported by the NOW! disk cache, and presumably
+ newer versions of SWBIOS and Disk Manager
+ for software which supports this call, AH=EEh is equivalent to calling
+ this function with CX=0400h
+ the cylinder offset is reset to 0 by all INT 13 called except AH=EEh
+ and AH=EFh
+SeeAlso: AX=7B00h
+--------v-13F2-------------------------------
+INT 13 - VIRUS - "Neuroquila" - INSTALLATION CHECK
+ AH = F2h
+Return: CF ??? if installed
+SeeAlso: AX=EC00h,INT 12/AX=4350h/BX=4920h,INT 21/AX=0B56h
+--------d-13F9-------------------------------
+INT 13 - SWBIOS - INSTALLATION CHECK
+ AH = F9h
+ DL = drive number (80h,81h)
+Return: CF clear
+ DX = configuration word
+ bit 15 set if other SWBIOS extensions available
+ CF set on error
+Program: SWBIOS is a TSR by Ontrack Computer Systems
+ XBIOS is a driver in some versions of Disk Manager that is
+ loaded from the disk MBR, replacing the ROM BIOS disk support
+ eg adding LBA mode support, and read/write multiple.
+Note: Disk Manager also supports these calls
+SeeAlso: AH=EEh,AX=E000h"XBIOS",AH=FFh"EZ-Drive"
+Index: Disk Manager
+--------v-13FA--DX5945-----------------------
+INT 13 - PC Tools v8+ VSAFE, VWATCH - API
+ AH = FAh
+ DX = 5945h
+ AL = function (00h-07h)
+Return: varies by function
+ if not installed:
+ CF set
+ AH = 01h
+Note: this API is identical to the ones on INT 16/AH=FAh and INT 21/AH=FAh,
+ so it is listed in its entirety under INT 16/AX=FA00h and following
+SeeAlso: INT 16/AX=FA00h
+--------v-13FD50------------------------
+INT 13 - VIRUS - "Predator" - INSTALLATION CHECK
+ AX = FD50h
+Return: AX = 50FDh if resident
+SeeAlso: AX=5001h"VIRUS",INT 16/AH=DDh"VIRUS"
+--------d-13FE-------------------------------
+INT 13 - SWBIOS - GET EXTENDED CYLINDER COUNT
+ AH = FEh
+ DL = drive number (80h, 81h)
+Return: CF clear
+ DX = number of cylinders beyond 1024 on drive
+Program: SWBIOS is a TSR by Ontrack Computer Systems
+Notes: standard INT 13/AH=08h will return a cylinder count truncated to 1024
+ BIOS without this extension would return count modulo 1024
+ Disk Manager also supports these calls
+SeeAlso: AH=EEh
+----------13FF-------------------------------
+INT 13 - EZ-Drive - INSTALLATION CHECK
+ AH = FFh
+ DL = drive number (80h)
+Return: CF clear
+ AX = AA55h
+ ES:BX -> string "AERMH13Vxx", where xx is the version number of
+ the EZ-Drive driver
+ CF set on error
+Program: EZ-Drive is a driver by Micro House that is loaded from the
+ hard disk MBR, replacing the ROM BIOS disk support, eg adding
+ LBA mode support, and read/write multiple.
+Note: this function is called by the Windows95 Master Boot Record
+SeeAlso: AX=E000h"XBIOS",AH=F9h"SWBIOS"
+--------B-13FF-------------------------------
+INT 13 - IBM SurePath BIOS - Officially "Private" Function
+ AH = FFh
+--------U-13FFFFBHAA-------------------------
+INT 13 - UNIQUE UX Turbo Utility - SET TURBO MODE
+ AX = FFFFh
+ BH = AAh
+ BL = subfunction
+ 00h installation check
+ Return: AX = 1234h if installed
+ 01h turn on Turbo mode
+ 02h turn off Turbo mode
+ 03h set Turbo mode according to hardware switch
+ 04h set disk access to Turbo mode
+ 05h set disk access to Normal mode
+Return: nothing
+SeeAlso: INT 15/AH=DFh
+Index: installation check;UNIQUE UX Turbo Utility
+--------S-14---------------------------------
+INT 14 - SERIAL - Digiboard DigiCHANNEL PC/X* Extender INT 14 (XAPCM232.SYS)
+InstallCheck: determine whether the "~DOSXAM~" character device exists
+Index: installation check;Digiboard DigiCHANNEL
+--------S-1400-------------------------------
+INT 14 - SERIAL - INITIALIZE PORT
+ AH = 00h
+ AL = port parameters (see #00300)
+ DX = port number (00h-03h) (04h-43h for Digiboard XAPCM232.SYS)
+Return: AH = line status (see #00304)
+ FFh if error on Digiboard XAPCM232.SYS
+ AL = modem status (see #00305)
+Notes: default handler is at F000h:E739h in IBM PC and 100% compatible BIOSes
+ since the PCjr supports a maximum of 4800 bps, attempting to set 9600
+ bps will result in 4800 bps
+ various network and serial-port drivers support the standard BIOS
+ functions with interrupt-driven I/O instead of the BIOS's polled I/O
+ the 1993/04/08 Compaq system ROM uses only the low two bits of DX
+ the default setting used by DOS (MS-DOS 6, DR-DOS 7.03, PTS-DOS) when
+ (re-)initializing the serial devices is AL=A3h (2400 bps, no parity,
+ 1 stop bit, 8 data bits).
+SeeAlso: AH=04h"SERIAL",AH=04h"MultiDOS",AH=05h"SERIAL",AH=57h
+SeeAlso: AX=8000h"ARTICOM",AH=81h"COMM-DRV",AH=82h"COURIERS",AH=8Ch
+SeeAlso: MEM 0040h:0000h,PORT 03F8h"Serial"
+
+Bitfields for serial port parameters:
+Bit(s) Description (Table 00300)
+ 7-5 data rate (110,150,300,600,1200,2400,4800,9600 bps)
+ 4-3 parity (00 or 10 = none, 01 = odd, 11 = even)
+ 2 stop bits (set = 2, clear = 1)
+ 1-0 data bits (00 = 5, 01 = 6, 10 = 7, 11 = 8)
+SeeAlso: #00302,#00307,#00308,#00309
+--------S-1400-------------------------------
+INT 14 - FOSSIL (Fido/Opus/Seadog Standard Interface Level) - INITIALIZE
+ AH = 00h
+ AL = initializing parameters
+ 7 - 6 - 5 4 - 3 2 1 - 0
+ -BAUD RATE- PARITY STOP WORD
+ BITS LENGTH
+ 000 19200 bd 00 none 0: 1 00: 5
+ 001 38400 bd 01 odd 1: 2 01: 6
+ 010 300 bd 11 even 10: 7
+ 011 600 bd 11: 8
+ 100 1200 bd
+ 101 2400 bd
+ 110 4800 bd
+ 111 9600 bd (4800 on PCjr)
+ DX = port number (0-3 or FFh if only performing non-I/O setup)
+Return: AH = RS-232 status code bits (see #00301)
+ AL = modem status bits
+ bit 3: always 1
+ bit 7: DCD - carrier detect
+SeeAlso: #00300,AH=05h"FOSSIL",AH=81h"COMM-DRV",AH=82h"COURIERS"
+
+Bitfields for FOSSIL RS-232 status:
+Bit(s) Description (Table 00301)
+ 0 RDA - input data is available in buffer
+ 1 OVRN - data has been lost
+ 5 THRE - room is available in output buffer
+ 6 TSRE - output buffer empty
+--------S-1400-------------------------------
+INT 14 - Tandy 2000 - SERIAL - RESET COMM PORT
+ AH = 00h
+ AL = RS-232C parameters (see #00302)
+ DL = port number
+ DH = protocol
+ bit 0: use XON/XOFF on received data
+ bit 1: use XON/XOFF when transmitting
+Return: AH = line status (see #00304)
+ AL = modem status (see #00305)
+Note: this interrupt is identical to INT 53 on the Tandy 2000
+SeeAlso: AH=04h"Tandy 2000",INT 53"Tandy 2000"
+--------S-1400-------------------------------
+INT 14 - MBBIOS - INITIALIZE PORT
+ AH = 00h
+ AL = port parameters (see #00302)
+ DX = port number
+Return: AH = line status (see #00304)
+ AL = modem status (see #00305)
+Note: MBBIOS was written by H. Roy Engehausen
+SeeAlso: AH=04h"MBBIOS",AH=05h"MBBIOS",AH=09h"MBBIOS"
+
+Bitfields for MBBIOS port parameters:
+Bit(s) Description (Table 00302)
+ 7-5 data rate
+ (normally 110,150,300,600,1200,2400,4800,9600 bps;
+ 9600,14400,19200,28800,38400,57600,115200,330400 bps
+ if the high-speed option is set)
+ 4-3 parity (00 or 10 = none, 01 = odd, 11 = even)
+ 2 stop bits (set = 2, clear = 1)
+ 1-0 data bits (00 = 5, 01 = 6, 10 = 7, 11 = 8)
+SeeAlso: #00300
+--------N-1400--DXFFFF-----------------------
+INT 14 - Connection Manager - MODIFY DEFAULT CONNECTION PARAMETERS
+ AH = 00h
+ DX = FFFFh
+ ES:DI -> vector string specifying new parameters
+Return: AH = return code (00h,03h) (see #00303)
+Program: Connection Manager by Softwarehouse Corp. permits the sharing of
+ serial ports over an IPX or NetBIOS-based network
+Note: if DX is 0-3 on entry, Connection Manager emulates the standard BIOS
+ function, but redirects the port over the network; if DX is any other
+ value, the call is chained
+SeeAlso: AH=04h/DX=FFFFh,AH=08h/DX=FFFFh,AH=0Ah/DX=FFFFh
+
+(Table 00303)
+Values for Connection Manager return code:
+ 00h successful
+ 01h no such connection
+ 02h invalid connection ID
+ 03h invalid subvector found
+ 04h communication error (check BH)
+ 06h insufficient resources, retry later
+ FFh no data available
+--------S-1401-------------------------------
+INT 14 - SERIAL - WRITE CHARACTER TO PORT
+ AH = 01h
+ AL = character to write
+ DX = port number (00h-03h) (04h-43h for Digiboard XAPCM232.SYS)
+Return: AH bit 7 clear if successful
+ AH bit 7 set on error
+ AH bits 6-0 = port status (see #00304)
+Notes: various network and serial-port drivers support the standard BIOS
+ functions with interrupt-driven I/O instead of the BIOS's polled I/O
+ the 1993/04/08 Compaq system ROM uses only the low two bits of DX
+SeeAlso: AH=02h,AH=0Bh"FOSSIL",AX=8000h"ARTICOM",AH=89h,MEM 0040h:007Ch
+--------N-1401--DXFFFF-----------------------
+INT 14 - Connection Manager - SEND CHARACTER
+ AH = 01h
+ DX = FFFFh
+ BH = character to send
+Return: AH = return code (00h-02h,06h) (see #00303)
+Notes: if DX is 0-3 on entry, Connection Manager emulates the standard BIOS
+ function, but redirects the port over the network; if DX is any other
+ value, the call is chained
+ this function is provided primarily for compatibility; AH=06h/DX=FFFFh
+ is the preferred function because it provides better performance
+SeeAlso: AH=02h/DX=FFFFh,AH=06h/DX=FFFFh,AH=09h/DX=FFFFh
+--------S-1402-------------------------------
+INT 14 - SERIAL - READ CHARACTER FROM PORT
+ AH = 02h
+ AL = 00h (ArtiCom)
+ DX = port number (00h-03h (04h-43h for Digiboard XAPCM232.SYS))
+Return: AH = line status (see #00304)
+ AL = received character if AH bit 7 clear
+Notes: will timeout if DSR is not asserted, even if function 03h returns
+ data ready
+ various network and serial-port drivers support the standard BIOS
+ functions with interrupt-driven I/O instead of the BIOS's polled I/O
+ the 1993/04/08 Compaq system ROM uses only the low two bits of DX
+SeeAlso: AH=01h,AH=02h"FOSSIL",AH=84h,AH=FCh
+--------S-1402-------------------------------
+INT 14 - FOSSIL - RECEIVE CHARACTER WITH WAIT
+ AH = 02h
+ DX = port number (0-3)
+Return: AL = character received
+ AH = 00h
+SeeAlso: AH=01h,AH=02h"SERIAL"
+--------N-1402--DXFFFF-----------------------
+INT 14 - Connection Manager - RECEIVE CHARACTER
+ AH = 02h
+ DX = FFFFh
+ BH = character to send
+Return: AH = return code (00h-02h,04h,FFh) (see #00303)
+ BH = line status (see #00304)
+ AL = received character (if any)
+Notes: if DX is 0-3 on entry, Connection Manager emulates the standard BIOS
+ function, but redirects the port over the network; if DX is any other
+ value, the call is chained
+ this function is provided primarily for compatibility; AH=07h/DX=FFFFh
+ is the preferred function because it provides better performance
+SeeAlso: AH=02h/DX=FFFFh,AH=03h/DX=FFFFh,AH=06h/DX=FFFFh
+--------S-1403-------------------------------
+INT 14 - SERIAL - GET PORT STATUS
+ AH = 03h
+ AL = 00h (ArtiCom)
+ DX = port number (00h-03h) (04h-43h for Digiboard XAPCM232.SYS)
+Return: AH = line status (see #00304)
+ AL = modem status (see #00305)
+ AX = 9E00h if disconnected (ArtiCom)
+Note: the 1993/04/08 Compaq system ROM uses only the low two bits of DX
+SeeAlso: AH=00h,AH=07h"MultiDOS",AX=8000h"ARTICOM",AH=81h"COURIERS",AX=FD02h
+
+Bitfields for serial line status:
+Bit(s) Description (Table 00304)
+ 7 timeout
+ 6 transmit shift register empty
+ 5 transmit holding register empty
+ 4 break detected
+ 3 framing error
+ 2 parity error
+ 1 overrun error
+ 0 receive data ready
+Note: for COMM-DRV, if bit 7 is set, an error occurred, and may be retrieved
+ through a separate call (see AX=8000h"COMM-DRV")
+
+Bitfields for modem status:
+Bit(s) Description (Table 00305)
+ 7 carrier detect
+ 6 ring indicator
+ 5 data set ready
+ 4 clear to send
+ 3 delta carrier detect
+ 2 trailing edge of ring indicator
+ 1 delta data set ready
+ 0 delta clear to send
+--------N-1403--DXFFFF-----------------------
+INT 14 - Connection Manager - RETURN COMMUNICATION PORT STATUS
+ AH = 03h
+ DX = FFFFh
+ AL = connection ID
+Return: AH = return code (00h-02h) (see #00303)
+ BH = line status (see #00306)
+ BL = modem status (see #00305) (only bits 4,5,7; all others zero)
+Notes: if DX is 0-3 on entry, Connection Manager emulates the standard BIOS
+ function, but redirects the port over the network; if DX is any other
+ value, the call is chained
+SeeAlso: AH=00h/DX=FFFFh,AH=04h/DX=FFFFh,AH=0Ah/DX=FFFFh
+
+Bitfields for Connection Manager line status:
+Bit(s) Description (Table 00306)
+ 7 CTS changed
+ 6 current CTS state
+ 5 timeout
+ 4 break
+ 3 framing error
+ 2 parity error
+ 1 overrun
+ 0 current carrier state (0 active, 1 no carrier)
+--------S-1404-------------------------------
+INT 14 - SERIAL - EXTENDED INITIALIZE (CONVERTIBLE,PS)
+ AH = 04h
+ AL = break status
+ 00h if break
+ 01h if no break
+ BH = parity (see #00307)
+ BL = number of stop bits
+ 00h one stop bit
+ 01h two stop bits (1.5 if 5 bit word length)
+ CH = word length (see #00308)
+ CL = bps rate (see #00309)
+ DX = port number
+Return: AX = port status code (see #00304,#00305)
+SeeAlso: AH=00h,AH=1Eh,AX=8000h"ARTICOM"
+
+(Table 00307)
+Values for serial port parity:
+ 00h no parity
+ 01h odd parity
+ 02h even parity
+ 03h stick parity odd
+ 04h stick parity even
+SeeAlso: #00300,#00308,#00309,#00310
+
+(Table 00308)
+Values for serial port word length:
+ 00h 5 bits
+ 01h 6 bits
+ 02h 7 bits
+ 03h 8 bits
+SeeAlso: #00300,#00307,#00309,#00345
+
+(Table 00309)
+Values for serial port bps rate:
+ 00h 110 (19200 if ComShare installed)
+ 01h 150 (38400 if ComShare installed)
+ 02h 300
+ 03h 600 (14400 if ComShare installed)
+ 04h 1200
+ 05h 2400
+ 06h 4800 (28800 if ComShare installed)
+ 07h 9600
+ 08h 19200
+---ComShare---
+ 09h 38400
+ 0Ah 57600
+ 0Bh 115200
+SeeAlso: #00300,#00307,#00309,#00346,#00353,AH=36h,#00364,#00606,#02923
+--------S-1404-------------------------------
+INT 14 - Tandy 2000 - SERIAL - FLUSH COMM BUFFER
+ AH = 04h
+ DL = port number
+ DH = protocol
+ bit 0: use XON/XOFF on received data
+ bit 1: use XON/XOFF when transmitting
+Return: nothing
+Desc: clears the serial interface buffer
+Note: this interrupt is identical to INT 53 on the Tandy 2000
+SeeAlso: AH=00h"Tandy 2000",INT 53"Tandy 2000"
+--------S-1404-------------------------------
+INT 14 - FOSSIL - INITIALIZE DRIVER
+ AH = 04h
+ DX = port number
+ optionally BX=4F50h
+ ES:CX -> byte to be set upon ^C
+Return: AX = 1954h (if successful)
+ BL = maximum function number supported (excluding 7Eh and above)
+ BH = revision of FOSSIL specification supported
+ DTR is raised
+Note: the word at offset 6 in the interrupt handler contains 1954h, and the
+ following byte contains the maximum function number supported; this
+ can serve as an installation check
+SeeAlso: AH=05h"FOSSIL",AH=1Ch,INT 11/AH=BCh
+Index: installation check;FOSSIL
+--------S-1404-------------------------------
+INT 14 - MultiDOS Plus IODRV - INITIALIZE PORT
+ AH = 04h
+Return: port initialized; if Hayes-compatible modem, a connection has been
+ established
+Note: the port number is stored at offset BEh in the Task Control Block
+ (see #00456 at INT 15/AH=13h"MultiDOS")
+SeeAlso: AH=00h,AH=05h"MultiDOS",AH=20h"MultiDOS",INT 15/AH=13h"MultiDOS"
+--------S-1404-------------------------------
+INT 14 - Digiboard DigiCHANNEL PC/X* - CHANGE BAUD RATE
+ AH = 04h
+ AL = initializing parameters (see #00310)
+ BX = baud rate
+ DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
+Return: AH = status
+ 00h successful
+ FFh error
+SeeAlso: AH=05h"Digiboard"
+
+Bitfields for Digiboard initializing parameters:
+Bit(s) Description (Table 00310)
+ 7-5 unused
+ 4-3 parity (00 none, 01 odd, 11 even)
+ 2 stop bits (0 = one, 1 = two)
+ 1-0 data bits (00 = five, 01 = six, 10 = seven, 11 = eight)
+SeeAlso: #00307,#00308
+--------S-1404-------------------------------
+INT 14 - MBBIOS - INSTALLATION CHECK
+ AH = 04h
+ DX = port number
+Return: AX = AA55h if installed on specified port
+SeeAlso: AH=00h"MBBIOS",AH=09h"MBBIOS"
+--------N-1404--DXFFFF-----------------------
+INT 14 - Connection Manager - OPEN COMMUNICATION
+ AH = 04h
+ DX = FFFFh
+ ES:DI -> Connection Request protocol vector (see #00311)
+Return: AH = return code
+ 00h successful
+ AL = connection ID
+ BH = connection type
+ 00h direct connection or no dialing
+ 01h Connection Server dialed phone
+ 01h no response from Connection Server
+ 03h invalid request
+Program: Connection Manager by Softwarehouse Corp. permits the sharing of
+ serial ports over an IPX or NetBIOS-based network
+Desc: initiate a connection to the Connection Server listed in the current
+ Client parameter set
+Notes: if DX is 0-3 on entry, Connection Manager emulates the standard BIOS
+ function, but redirects the port over the network; if DX is any other
+ value, the call is chained
+ all subvectors of the Connection Request vector are optional; if
+ missing, default values are provided by the default connection
+ parameter set
+SeeAlso: AH=00h/DX=FFFFh,AH=05h/DX=FFFFh,AH=06h/DX=FFFFh,AH=07h/DX=FFFFh
+SeeAlso: AH=0Ah/DX=FFFFh,AH=0Ch/DX=FFFFh
+
+Format of Connection Manager protocol command vector:
+Offset Size Description (Table 00311)
+ 00h WORD (big-endian) total length of command (including this word)
+ 02h WORD (big-endian) command code
+ EF01h Connection Request
+ EF06h Modify Connection Parameters
+ 04h N BYTEs list of subvectors (see #00313)
+ allowable subvector types are 01h-04h,17h,18h for command code
+ EF01h; 03h,04h for command code EF06h (see #00312)
+
+(Table 00312)
+Values for Connection Manager subvector type code:
+ 01h Connection ID
+ 02h Destination ID
+ 03h Asynchronous line parameters
+ 04h Data transfer parameters
+ 09h Line speed
+ 0Ah Serial coding
+ 0Bh Packet size
+ 0Ch Timers
+ 0Dh Special characters
+ 0Eh Target ID
+ 0Fh Telephone number
+ 10h ASCII destination ID
+ 11h Parity
+ 12h Bits per character
+ 13h Number of stop bits
+ 14h Packet timer
+ 15h Intercharacter timer
+ 17h Flags
+ 18h Parameter ranges
+ 19h Flow control
+
+Format of Connection Manager subvector:
+Offset Size Description (Table 00313)
+ 00h BYTE length of subvector
+ 01h BYTE type code (see #00312)
+ 02h N-2 BYTEs data, which may include subvectors
+SeeAlso: #00314,#00315,#00316,#00317,#00318,#00319,#00320,#00321,#00322,#00323,#00324
+SeeAlso: #00325,#00326,#00328,#00329,#00330,#00331,#00332,#00333,#00311
+
+Format of Connection ID subvector:
+Offset Size Description (Table 00314)
+ 00h BYTE 03h (length)
+ 01h BYTE 01h (subvector "Connection ID")
+ 02h BYTE connection ID
+SeeAlso: #00313
+
+Format of Destination ID subvector:
+Offset Size Description (Table 00315)
+ 00h BYTE length
+ 01h BYTE 02h (subvector "Destination ID")
+ 02h N BYTEs subvector(s) of type 0Eh, 0Fh, or 10h
+SeeAlso: #00313
+
+Format of Asynchronous line parameters subvector:
+Offset Size Description (Table 00316)
+ 00h BYTE length
+ 01h BYTE 03h (subvector "Asynchronous line parameters")
+ 02h N BYTEs subvector(s) of type 09h, 0Ah, or 19h
+SeeAlso: #00313
+
+Format of Data transfer parameters subvector:
+Offset Size Description (Table 00317)
+ 00h BYTE length
+ 01h BYTE 04h (subvector "Data transfer parameters")
+ 02h N BYTEs subvector(s) of type 0Bh, 0Ch, or 0Dh
+SeeAlso: #00313
+
+Format of Line speed subvector:
+Offset Size Description (Table 00318)
+ 00h BYTE 04h (length)
+ 01h BYTE 09h (subvector "Line speed")
+ 02h WORD bit map, highest set bit selects speed
+ bit 0: 2400
+ bits 1-7: 1800, 1200, 600, 300, 115200, 150, 110 bps
+ bits 8-15: 57600, 38400, 19200, 14400, 9600, 7200, 4800, 3600
+SeeAlso: #00313
+
+Format of Serial coding subvector:
+Offset Size Description (Table 00319)
+ 00h BYTE length
+ 01h BYTE 0Ah (subvector "Serial coding")
+ 02h N BYTEs subvector(s) of type 11h, 12h, or 13h
+SeeAlso: #00313
+
+Format of Packet size subvector:
+Offset Size Description (Table 00320)
+ 00h BYTE 04h (length)
+ 01h BYTE 0Bh (subvector "Packet size")
+ 02h WORD (big-endian) packet size, 1 to 1024
+SeeAlso: #00313
+
+Format of Timers subvector:
+Offset Size Description (Table 00321)
+ 00h BYTE length
+ 01h BYTE 0Ch (subvector "Timers")
+ 02h 8 BYTEs subvector of type 14h or 15h
+SeeAlso: #00313
+
+Format of Special characters subvector:
+Offset Size Description (Table 00322)
+ 00h BYTE length
+ 01h BYTE 0Dh (subvector "Special characters")
+ 02h N BYTEs list of ASCII characters to be used as EOM or EOB
+SeeAlso: #00313
+
+Format of Target ID:
+Offset Size Description (Table 00323)
+ 00h BYTE length
+ 01h BYTE 0Eh (subvector "Target ID")
+ 02h N BYTEs target ID, 1-16 bytes
+SeeAlso: #00313
+
+Format of Telephone number subvector:
+Offset Size Description (Table 00324)
+ 00h BYTE length
+ 01h BYTE 0Fh (subvector "Telephone number")
+ 02h N BYTEs telephone number
+SeeAlso: #00313
+
+Format of ASCII destination ID subvector:
+Offset Size Description (Table 00325)
+ 00h BYTE length
+ 01h BYTE 10h (subvector "ASCII destination ID")
+ 02h N BYTEs destination ID
+SeeAlso: #00313
+
+Format of Parity subvector:
+Offset Size Description (Table 00326)
+ 00h BYTE 03h (length)
+ 01h BYTE 11h (subvector "Parity")
+ 02h BYTE parity type (see #00327)
+SeeAlso: #00313
+
+Bitfields for Connection Manager parity type:
+Bit(s) Description (Table 00327)
+ 7 odd
+ 6 even
+ 5 mark
+ 4 space
+ 3 none
+SeeAlso: #00326
+
+Format of Bits per character subvector:
+Offset Size Description (Table 00328)
+ 00h BYTE 03h (length)
+ 01h BYTE 12h (subvector "Bits per character")
+ 02h BYTE bits per character
+ bit 7: seven
+ bit 6: eight
+SeeAlso: #00313
+
+Format of Number of stop bits subvector:
+Offset Size Description (Table 00329)
+ 00h BYTE 03h (length)
+ 01h BYTE 13h (subvector "Number of stop bits")
+ 02h BYTE stop bits
+ bit 7: one
+ bit 6: 1.5
+ bit 5: two
+SeeAlso: #00313
+
+Format of Packet timer and Intercharacter timer subvectors:
+Offset Size Description (Table 00330)
+ 00h BYTE 04h (length)
+ 01h BYTE subvector type
+ 14h Packet timer
+ 15h Intercharacter timer
+ 02h WORD (big-endian) unit of value representing 20ms
+SeeAlso: #00313
+
+Format of Flags subvector:
+Offset Size Description (Table 00331)
+ 00h BYTE 03h (length)
+ 01h BYTE 17h (subvector "Flags")
+ 02h BYTE flags
+ bit 7: queueing requested
+SeeAlso: #00313
+
+Format of Parameter ranges subvector:
+Offset Size Description (Table 00332)
+ 00h BYTE length
+ 01h BYTE 18h (subvector "Parameter ranges")
+ 02h N BYTEs subvector(s) of type 09h, 11h, 12h, or 13h
+SeeAlso: #00313
+
+Format of Flow control subvector:
+Offset Size Description (Table 00333)
+ 00h BYTE length (02h-04h)
+ 01h BYTE 19h (subvector "Flow control")
+ 02h BYTE XOFF character
+ 03h BYTE XON character
+Note: if length is 02h, flow control is disabled; if length is 03h, any
+ character will be accepted as XON after an XOFF
+SeeAlso: #00313
+--------S-140400-----------------------------
+INT 14 - Microsoft Systems Journal TSRCOMM INT14 - INSTALLATION CHECK
+ AX = 0400h
+Return: AX = 0FF0h
+SeeAlso: AX=0401h,AX=0408h
+--------S-140401-----------------------------
+INT 14 - Microsoft Systems Journal TSRCOMM INT14 - INITIALIZE MODE
+ AX = 0401h
+ CX = mode
+Return: nothing
+SeeAlso: AX=0400h,AX=0402h
+--------S-140402-----------------------------
+INT 14 - Microsoft Systems Journal TSRCOMM INT14 - EXTENDED INITIALIZE
+ AX = 0402h
+ CL = parameters
+Return: nothing
+SeeAlso: AX=0400h,AX=0401h
+--------S-140403-----------------------------
+INT 14 - Microsoft Systems Journal TSRCOMM INT14 - SET TIMEOUT
+ AX = 0403h
+ CX = timeout
+Return: nothing
+SeeAlso: AX=0400h
+--------S-140404-----------------------------
+INT 14 - Microsoft Systems Journal TSRCOMM INT14 - CLEAR THE RECEIVE BUFFER
+ AX = 0404h
+Return: nothing
+SeeAlso: AX=0400h,AX=0405h,AX=0406h
+--------S-140405-----------------------------
+INT 14 - Microsoft Systems Journal TSRCOMM INT14 - GET RECEIVE BUFFER COUNT
+ AX = 0405h
+Return: AX = number of characters in buffer
+SeeAlso: AX=0400h,AX=0404h,AX=0407h
+--------S-140406-----------------------------
+INT 14 - Microsoft Systems Journal TSRCOMM INT14 - CLEAR THE TRANSMIT BUFFER
+ AX = 0406h
+Return: nothing
+SeeAlso: AX=0400h,AX=0404h,AX=0407h
+--------S-140407-----------------------------
+INT 14 - Microsoft Systems Journal TSRCOMM INT14 - GET TRANSMIT BUFFER COUNT
+ AX = 0407h
+Return: AX = number of characters in the buffer
+SeeAlso: AX=0400h,AX=0405h,AX=0406h
+--------S-140408-----------------------------
+INT 14 - Microsoft Systems Journal TSRCOMM INT14 - UNINSTALL
+ AX = 0408h
+Return: nothing
+SeeAlso: AX=0400h
+--------S-1405-------------------------------
+INT 14 - SERIAL - EXTENDED COMMUNICATION PORT CONTROL (CONVERTIBLE,PS)
+ AH = 05h
+ AL = function
+ 00h read modem control register
+ Return: BL = modem control register (see #00334)
+ AH = status
+ 01h write modem control register
+ BL = modem control register (see #00334)
+ Return: AX = status
+ DX = port number
+Note: also supported by ArtiCom
+SeeAlso: AH=00h,AH=1Fh,AX=8000h"ARTICOM",AH=FBh
+
+Bitfields for modem control register:
+Bit(s) Description (Table 00334)
+ 0 data terminal ready
+ 1 request to send
+ 2 OUT1
+ 3 OUT2
+ 4 LOOP
+ 5-7 reserved
+--------S-1405-------------------------------
+INT 14 - FOSSIL - DEINITIALIZE DRIVER
+ AH = 05h
+ DX = port number
+Return: none
+ DTR is not affected
+SeeAlso: AH=00h,AH=04h"FOSSIL",AH=1Dh,AH=8Dh
+--------S-1405-------------------------------
+INT 14 - MultiDOS Plus IODRV - READ CHARACTER FROM PORT
+ AH = 05h
+ AL = timeout in seconds (00h = never)
+Return: AL = status
+ 00h successful
+ AH = character read
+ 01h read error
+ 02h timed out
+ other modem status (CTS, DSR) changed
+Note: the port number is stored at offset BEh in the Task Control Block
+SeeAlso: AH=02h,AH=04h"MultiDOS",AH=06h"MultiDOS",AH=22h"MultiDOS"
+SeeAlso: INT 15/AH=13h"MultiDOS"
+--------S-1405-------------------------------
+INT 14 - Digiboard DigiCHANNEL PC/X* - CHANGE PROTOCOL
+ AH = 05h
+ AL = protocol (see #00335)
+ BH = new XOFF character (00h = current)
+ BL = new XON character (00h = current)
+ DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
+Return: AH = status
+ 00h successful
+ FFh error
+SeeAlso: AH=04h"Digiboard"
+
+Bitfields for Digiboard protocol:
+Bit(s) Description (Table 00335)
+ 7-4 unused
+ 3 RTS/CTS
+ 2 DSR
+ 1,0 XON/XOFF
+--------S-1405-------------------------------
+INT 14 - MBBIOS - DROP DTR AND RTS
+ AH = 05h
+ DX = port number
+Return: none
+SeeAlso: AH=00h"MBBIOS",AH=06h"MBBIOS",AH=06h"FOSSIL"
+--------S-1405-------------------------------
+INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - CHANGE PORT PROTOCOL
+ AH = 05h
+ AL = new port protocol (see #00336)
+ BH = new XOFF character
+ BL = new XON character
+ DX = port number
+Return: AH = FFh if invalid protocol
+SeeAlso: AH=00h,AH=04h"SERIAL",AH=06h"PC-MOS"
+
+Bitfields for PC-MOS/386 serial port protocol:
+Bit(s) Description (Table 00336)
+ 7 set to enable/disable CD monitoring, clear to set protocol
+---bit 7 set---
+ 4 CD monitoring enabled
+ 5 automatic restart enabled
+---bit 7 clear---
+ 0 receive XON/XOFF
+ 1 transmit XON/XOFF
+ 2 DTR/DSR
+ 3 RTS/CTS
+----------1405-------------------------------
+INT 14 - PhysTechSoft PTS ROM-DOS - SET PACKET
+ AH = 05h
+ CX = packet length
+ DX = port number
+ DS:SI -> packet
+Return: AH = error code (0 = no error, -1 = error)
+Notes: The embedded PC can send messages at any time. The managing PC may
+ force the embedded PC to receive messages only after causing a reset
+ on the remote embedded PC.
+ !!!from Matthias Paul:
+ Description of the high-level control packets:
+ After the reset the embedded PC will send a 4-byte packet "LOAD"
+ to the managing PC to indicate it is now able to receive commands.
+ The managing PC can send commands using 6-byte sized packets starting
+ with "COMM" followed by a 2-byte command code:
+ "01" demand setup information
+ "02" demand sending of diagnostic information
+ If diagnostic information is requested, the embedded PC will send back
+ a header packet starting with 4-byte "DIAG" followed by 2 bytes
+ indicating the count of diagnostic data packets following. Each
+ diagnostic data packet is sized 134 bytes, starting with the 4-byte
+ "DIAG", a 2-byte number packet, followed by 128 bytes of data.
+ If setup information is requested, the embedded PC will send back
+ 8 bytes length packets starting with "SETP" and 2 byte of setup
+ information of the LOADER and BIOS. The contents varies.
+ If the embedded PC requests the managing PC to send a BIOS it will
+ send a 4 byte packet "BIOS".
+ The managing PC will then send back a 6-byte sized BIOS header packet
+ starting with "BIOS" and a 2-byte indicator of the BIOS image size
+ in packets.
+ The embedded PC will answer by sending a 6 byte packet starting with
+ "BIOS" followed by the running number of the demanded packet.
+ The managing PC will then send the requested part of the BIOS image
+ in a 134 byte sized packet, starting with "BIOS", the 2 byte running
+ number of the packet and 128 bytes of the actual BIOS info.
+ The embedded PC acknowledges that it received the BIOS with a 6-byte
+ packet "BIOS", followed by 2-bytes of 0.
+ If the embedded PCs requests the managing PC to send the operating
+ system, it will follow the same proceduce as for requesting the
+ BIOS. The only difference is that instead of "BIOS", the string
+ "PTOS" will be used in the communication.
+ Debug information packets have a length of 32 bytes starting with
+ the 4-byte "DEBU" signature, and followed by the contents of the
+ PCU registers in the following order: SP, SS, ES, DS, BP, DI, SI,
+ DX, CX, BX, AX, IP, CS, Flags. Debug information is send after
+ reaching the corresponding breakpoint.
+ Description of the low-level packet protocol:
+ Before sending a packet the sending side sends a byte 52h and for a
+ certain time (ca. 1 second for the embedded PC) waits for
+ confirmation (41h) from the receiving side. If no acknowledge is
+ received this procedure is repeated 4 more times before an error is
+ returned.
+ If acknowledge was received the following information is sent:
+ 2 BYTEs synchronization (50h, 50h)
+ BYTE data packet size - 1
+ 2 BYTEs CRC of the data
+ var. data
+ 2 BYTEs synchronization (F0h, F0h)
+ The receiving side must acknowledge this by sending back two bytes
+ 59h, 59h. If the sender does not receive the confirmation, it
+ tries 4 more times before returning an error.
+SeeAlso: INT 14h/AH=06h, INT 15h/AX=E908h, INT 15h/E909h
+--------N-1405--DXFFFF-----------------------
+INT 14 - Connection Manager - CLOSE COMMUNICATION
+ AH = 05h
+ DX = FFFFh
+ AL = connection ID
+Return: AH = return code
+ 00h successful
+ 01h no such connection
+ 02h invalid connection ID
+ AL = correct connection ID
+Desc: terminate existing connection to allow another one to be established
+Note: if DX is 0-3 on entry, Connection Manager emulates the standard BIOS
+ function, but redirects the port over the network; if DX is any other
+ value, the call is chained
+SeeAlso: AH=04h/DX=FFFFh,AH=0Dh/DX=FFFFh
+--------S-1406-------------------------------
+INT 14 - FOSSIL - RAISE/LOWER DTR
+ AH = 06h
+ DX = port
+ AL = DTR state to be set
+ 00h = lower
+ 01h = raise
+Return: nothing
+SeeAlso: AH=05h"MBBIOS",AH=1Ah
+--------S-1406-------------------------------
+INT 14 - MultiDOS Plus IODRV - WRITE CHARACTER TO PORT
+ AH = 06h
+ AL = character
+Return: AL = status
+ 00h successful
+Notes: the port number is stored at offset BEh in the Task Control Block
+ if output queue is full, the calling task is blocked until the
+ character can be stored
+SeeAlso: AH=01h,AH=04h"MultiDOS",AH=05h"MultiDOS",AH=21h"MultiDOS"
+SeeAlso: INT 15/AH=13h"MultiDOS"
+--------S-1406-------------------------------
+INT 14 - MBBIOS - RAISE DTR AND RTS
+ AH = 06h
+ DX = port number
+Return: none
+SeeAlso: AH=05h"MBBIOS",AH=07h"MBBIOS"
+--------S-1406-------------------------------
+INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - DRIVER 'ID' FUNCTION
+ AH = 06h
+ DX = port number
+Return: AH bit 7 set
+ AL = number of highest function supported by driver
+Program: PC-MOS/386 v5.01 is a multitasking, multiuser MS-DOS 5.0-compatible
+ operating system by The Software Link, Inc.
+SeeAlso: AH=18h"PC-MOS"
+--------N-1406-------------------------------
+INT 14 - TelAPI - WRITE BLOCK
+ AH = 06h
+ CX = number of characters to write
+ DX = port number
+ ES:DI -> buffer containing data
+Return: AX = number of characters actually sent (negative on error)
+ CX = ???
+SeeAlso: AH=07h"TelAPI",AH=E0h"TelAPI",AH=E3h"TelAPI"
+----------1406-------------------------------
+INT 14 - PhysTechSoft PTS ROM-DOS - GET PACKET
+ AH = 06h
+ CX = buffer size for packet
+ DX = port number
+ DS:SI -> buffer for packet
+Return: AH = error code (00h = no error, FFh = error)
+ CX = packet size
+SeeAlso: AH=05h"PTS ROM-DOS",INT 15/AX=E908h,INT 15/AX=E909h
+--------N-1406--DXFFFF-----------------------
+INT 14 - Connection Manager - SEND CHARACTER BLOCK
+ AH = 06h
+ DX = FFFFh
+ AL = connection ID
+ CX = number of characters to send
+ ES:DI -> buffer containing data to be sent
+Return: AH = return code (see #00303)
+Program: Connection Manager by Softwarehouse Corp. permits the sharing of
+ serial ports over an IPX or NetBIOS-based network
+SeeAlso: AH=04h/DX=FFFFh,AH=07h/DX=FFFFh,AH=09h/DX=FFFFh
+--------S-1407-------------------------------
+INT 14 - FOSSIL - RETURN TIMER TICK PARAMETERS
+ AH = 07h
+Return: AL = timer tick interrupt number
+ AH = ticks per second on interrupt number in AL
+ DX = approximate number of milliseconds per tick
+SeeAlso: AH=16h
+--------S-1407-------------------------------
+INT 14 - MultiDOS Plus IODRV - GET PORT STATUS
+ AH = 07h
+Return: CL = modem status (see #00305)
+ CH = character at head of input queue (if any)
+ DX = number of characters in input queue
+Note: the port number is stored at offset BEh in the Task Control Block
+SeeAlso: AH=03h,AH=05h"MultiDOS",AH=08h"MultiDOS",AH=09h"MultiDOS"
+SeeAlso: AH=23h"MultiDOS",INT 15/AH=13h"MultiDOS"
+--------S-1407-------------------------------
+INT 14 - MBBIOS - SEND BREAK
+ AH = 07h
+ DX = port number
+Return: none
+SeeAlso: AH=06h"MBBIOS",AH=FAh"EBIOS"
+--------S-1407-------------------------------
+INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - SEND RS-232 BREAK
+ AH = 07h
+ BX = duration of break in clock ticks
+ DX = port number
+Return: nothing
+--------N-1407-------------------------------
+INT 14 - TelAPI - READ BLOCK
+ AH = 07h
+ CX = length of buffer in bytes
+ DX = port number
+ ES:DI -> buffer for data
+Return: AX > 0000h number of characters actually read
+ AX = 0000h host has closed connection
+ AX < 0000h error code (see #00397)
+ CX = ???
+Note: translates CRLF into local EOL if the connection is in ASCII mode,
+ negotiates various Telnet options, and immediately executes several
+ different Telnet action commands
+SeeAlso: AH=06h"TelAPI",AH=E0h"TelAPI",AH=E2h"TelAPI"
+--------N-1407--DXFFFF-----------------------
+INT 14 - Connection Manager - RECEIVE CHARACTER BLOCK
+ AH = 07h
+ DX = FFFFh
+ AL = connection ID
+ BL = flag
+ 00h wait for data
+ nonzero do not wait if no data avaiable
+ CX = size of receive buffer
+ ES:DI -> buffer for received characters
+Return: AH = return code (00h-02h,04h,FFh) (see #00303)
+ BH = line status (see #00306)
+ CX = number of characters received
+Program: Connection Manager by Softwarehouse Corp. permits the sharing of
+ serial ports over an IPX or NetBIOS-based network
+SeeAlso: AH=01h/DX=FFFFh,AH=04h/DX=FFFFh,AH=06h/DX=FFFFh
+--------S-1408-------------------------------
+INT 14 - FOSSIL - FLUSH OUTPUT BUFFER WAITING TILL ALL OUTPUT IS DONE
+ AH = 08h
+ DX = port number
+Return: nothing
+SeeAlso: AH=09h"FOSSIL"
+--------S-1408-------------------------------
+INT 14 - MultiDOS Plus 4.0 IODRV - GET AND RESET PORT LINE STATUS
+ AH = 08h
+Return: AL = line status (see #00304)
+ AH destroyed
+Notes: the port number is stored at offset BEh in the Task Control Block
+ on every line status change, the line status is ORed with the line
+ status accumulator; this function returns the accumulator and clears
+ it
+SeeAlso: AH=03h,AH=04h"MultiDOS",AH=07h"MultiDOS",INT 15/AH=13h"MultiDOS"
+--------S-1408-------------------------------
+INT 14 - Digiboard DigiCHANNEL PC/X* - ALTERNATE STATUS CHECK
+ AH = 08h
+ DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
+Return: AH = RS232 status bits (see #00304 at AH=03h)
+ ZF set if no characters queued
+ ZF clear if character available
+ AL = next character
+SeeAlso: AH=03h,AH=08h"PC-MOS",AH=09h"Digiboard",AH=14h"Digiboard"
+--------S-1408-------------------------------
+INT 14 - MBBIOS - NON-DESTRUCTIVE READ
+ AH = 08h
+ DX = port number
+Return: AL = character (if AH bit 0 set)
+ AH = status (see #00304)
+SeeAlso: AH=0Bh"MBBIOS",AH=0Ch"FOSSIL"
+--------S-1408-------------------------------
+INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - INPUT STATUS CHECK
+ AH = 08h
+ DX = port number
+Return: CF set if carrier loss detected
+ ZF set if input buffer empty
+ ZF clear if characters available
+ AL = next character dequeued
+--------N-1408--DXFFFF-----------------------
+INT 14 - Connection Manager - RETURN DEFAULT CONNECTION PARAMETERS
+ AH = 08h
+ DX = FFFFh
+ CX = size of buffer for parameters or 0000h to get length
+ ES:DI -> buffer for parameter vector (see #00311)
+Return: AH = return code
+ 00h successful
+ CX = number of bytes required (if CX=0000h on entry)
+ CX = number of bytes omitted for lack of space (if CX nonzero)
+ nonzero invalid request
+Program: Connection Manager by Softwarehouse Corp. permits the sharing of
+ serial ports over an IPX or NetBIOS-based network
+SeeAlso: AH=00h/DX=FFFFh,AH=0Fh/DX=FFFFh
+--------S-1409-------------------------------
+INT 14 - FOSSIL - PURGE OUTPUT BUFFER THROWING AWAY ALL PENDING OUTPUT
+ AH = 09h
+ DX = port number
+Return: nothing
+SeeAlso: AH=08h"FOSSIL",AH=0Ah"FOSSIL",AH=88h
+--------S-1409-------------------------------
+INT 14 - MultiDOS Plus IODRV - RESET PORT STATUS
+ AH = 09h
+Return: modem status byte cleared
+Note: the port number is stored at offset BEh in the Task Control Block
+SeeAlso: AH=04h"MultiDOS",AH=07h"MultiDOS",INT 15/AH=13h"MultiDOS"
+--------S-1409-------------------------------
+INT 14 - Digiboard DigiCHANNEL PC/X* - CLEAR BUFFERS
+ AH = 09h
+ DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
+Return: AH = status
+ 00h successful
+ FFh error
+SeeAlso: AH=08h"Digiboard",AH=0Ah"Digiboard",AH=10h"Digiboard"
+--------S-1409-------------------------------
+INT 14 - MBBIOS - GET/SET OPTIONS
+ AH = 09h
+ AL = option byte (see #00337)
+ DX = port number???
+Return: AL = old option byte
+SeeAlso: AH=00h"MBBIOS",AH=04h"MBBIOS",AH=10h"FOSSIL"
+
+Bitfields for MBBIOS option byte:
+Bit(s) Description (Table 00337)
+ 0 transmit buffering enabled
+ 2 hardware handshaking enabled
+ 5 high-speed option enabled (see AH=00h"MBBIOS",#00302)
+ other reserved
+--------S-1409-------------------------------
+INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - RESET I/O BUFFER POINTERS
+ AH = 09h
+ DX = port number
+Return: nothing
+SeeAlso: AH=13h"PC-MOS"
+--------N-1409--DXFFFF-----------------------
+INT 14 - Connection Manager - SEND BREAK
+ AH = 09h
+ DX = FFFFh
+ AL = connection ID
+Return: AH = return code (00h-02h) (see #00303 at AH=00h/DX=FFFFh)
+Program: Connection Manager by Softwarehouse Corp. permits the sharing of
+ serial ports over an IPX or NetBIOS-based network
+SeeAlso: AH=02h/DX=FFFFh,AH=03h/DX=FFFFh
+--------S-140A-------------------------------
+INT 14 - FOSSIL - PURGE INPUT BUFFER THROWING AWAY ALL PENDING INPUT
+ AH = 0Ah
+ DX = port number
+Return: nothing
+SeeAlso: AH=09h"FOSSIL",AH=85h
+--------S-140A-------------------------------
+INT 14 - Digiboard DigiCHANNEL PC/X* - INPUT QUEUE CHECK
+ AH = 0Ah
+ DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
+Return: AX = number of characters available in buffer
+Note: this function is also supported by the PC-MOS/386 v5.01 $serial.sys
+SeeAlso: AH=09h"Digiboard",AH=0Dh"Digiboard"
+--------S-140A-------------------------------
+INT 14 - MBBIOS - WRITE BUFFER
+ AH = 0Ah
+ CX = count
+ ES:DI -> buffer (see #00338)
+Return: AX = status (see #00304,#00305)
+ CX = unsent character count
+ DI updated
+Note: the PACCOM version of MBBIOS does not use CX or ES:DI; instead, ES
+ contains the segment of a buffer containing the packet to be sent,
+ which by default will be freed once the packet has been sent. Use
+ AH=0Ch"MBBIOS" to allocate the buffer.
+SeeAlso: AH=01h,AH=0Bh"MBBIOS",AH=0Ch"MBBIOS",AH=19h"FOSSIL"
+
+Format of MBBIOS PACCOM buffer:
+Offset Size Description (Table 00338)
+ 00h 504 BYTEs data area
+1F8h WORD length of data in data area
+1FAh BYTE flags/status
+ bit 7: don't discard buffer after transmitting data
+ bit 6: buffer has been transmitted
+1FBh BYTE reserved (0) for additional flags/status
+1FCh WORD user data
+1FEh WORD MBBIOS-internal pointer to next buffer
+--------N-140A--DXFFFF-----------------------
+INT 14 - Connection Manager - MODIFY ACTIVE CONNECTION PARAMETERS
+ AH = 0Ah
+ DX = FFFFh
+ ES:DI -> vector string containing new parameters (see #00311)
+Return: AH = return code (00h-03h,06h) (see #00303)
+Program: Connection Manager by Softwarehouse Corp. permits the sharing of
+ serial ports over an IPX or NetBIOS-based network
+Note: any subvectors valid for the Change Parameters command replace the
+ existing values in the current set
+SeeAlso: AH=00h/DX=FFFFh,AH=0Fh/DX=FFFFh
+--------S-140B-------------------------------
+INT 14 - FOSSIL - TRANSMIT NO WAIT
+ AH = 0Bh
+ AL = character
+ DX = port number
+Return: AX = result
+ 0000h character not accepted
+ 0001h character accepted
+SeeAlso: AH=01h
+--------S-140B-------------------------------
+INT 14 - MBBIOS - READ BUFFER
+ AH = 0Bh
+ CX = size of buffer
+ ES:DI -> buffer
+Return: AH = composite line status (see #00304) formed by ORing all statuses
+ on receive interrupts; bit 0 set if additional characters
+ available
+ AL = composite modem status (see #00305) formed by ORing all statuses
+ CX = number of characters actually read
+ DI updated
+Note: the PACCOM version of MBBIOS does not use CX or ES:DI on call,
+ instead returning ES set to the segment of the buffer containing a
+ received packet, or 0000h if no packets available; the buffer may
+ be freed with AH=0Ch"MBBIOS"
+SeeAlso: AH=02h,AH=08h"MBBIOS",AH=0Ah"MBBIOS",AH=0Ch"MBBIOS",AH=18h"FOSSIL"
+--------N-140B--DXFFFF-----------------------
+INT 14 - Connection Manager - PREPARE FOR INBOUND CONNECTION
+ AH = 0Bh
+ DX = FFFFh
+ AL = service name
+ 00h use parameter file or default
+ 01h use specified name
+ ES:DI -> 16-byte blank-padded name
+ BH = connection notification
+ 00h program awaiting connection, don't notify user
+ 01h notify user on connecting
+ BL = connection type
+ 00h connection will use Connection Manager API
+Return: AH = return code (00h-02h) (see #00303 at AH=00h/DX=FFFFh)
+ AL = connection ID if AH=00h
+Program: Connection Manager by Softwarehouse Corp. permits the sharing of
+ serial ports over an IPX or NetBIOS-based network
+SeeAlso: AH=04h/DX=FFFFh,AH=0Ch/DX=FFFFh,AH=10h/DX=FFFFh
+--------S-140C-------------------------------
+INT 14 - FOSSIL - NON-DESTRUCTIVE READ AHEAD
+ AH = 0Ch
+ DX = port number
+Return: AX = FFFFh character not available
+ AX = 00xxh character xx available
+SeeAlso: AH=08h"MBBIOS",AH=20h"FOSSIL"
+--------S-140C-------------------------------
+INT 14 - MBBIOS PACCOM support - BUFFER MANAGEMENT
+ AH = 0Ch
+ ES = segment of buffer to free, or 0000h to allocate new buffer
+Return: ES = segment of allocated buffer (if ES=0000h on entry)
+Note: the PACCOM version of MBBIOS uses only ES as buffer address for
+ AH=0Ah and AH=0Bh
+SeeAlso: AH=0Ah"MBBIOS",AH=0Bh"MBBIOS"
+--------N-140C--DXFFFF-----------------------
+INT 14 - Connection Manager - TEST FOR INBOUND CONNECTION REQUEST
+ AH = 0Ch
+ DX = FFFFh
+ AL = connection ID from AH=0Bh/DX=FFFFh
+Return: AH = return code (00h-03h) (see also #00303 at AH=00h/DX=FFFFh)
+ 03h not prepared for inbound connection
+ AL = connection ID (if AH=00h) or correct connection ID (if AH=02h)
+Program: Connection Manager by Softwarehouse Corp. permits the sharing of
+ serial ports over an IPX or NetBIOS-based network
+SeeAlso: AH=03h/DX=FFFFh,AH=04h/DX=FFFFh,AH=0Bh/DX=FFFFh
+--------S-140D-------------------------------
+INT 14 - FOSSIL - KEYBOARD READ WITHOUT WAIT
+ AH = 0Dh
+Return: AX = result
+ FFFFh character not available
+ xxyyh standard IBM-style scan code
+SeeAlso: AH=0Eh
+--------S-140D-------------------------------
+INT 14 - Digiboard DigiCHANNEL PC/X* - GET POINTER TO CH_KEY_RDY FLAG
+ AH = 0Dh
+ DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
+Return: ES:BX -> CH_KEY_RDY flag (see #00339)
+SeeAlso: AH=0Ah"Digiboard"
+
+(Table 00339)
+Values for Digiboard CH_KEY_RDY flag:
+ 00h receive buffer empty
+ FFh characters available
+--------S-140D-------------------------------
+INT 14 - MBBIOS PACCOM support - SET TXD
+ AH = 0Dh
+ AL = new setting (FFh = 1.0)
+Return: nothing
+Desc: specify the time from RTS to start or packet
+SeeAlso: AX=0D00h,AH=0Eh"MBBIOS",AH=0Fh"MBBIOS"
+--------N-140D--DXFFFF-----------------------
+INT 14 - Connection Manager - TERMINATE CONNECTION CLIENT ACTIVITY
+ AH = 0Dh
+ DX = FFFFh
+Return: AH = return code
+ 00h successful
+ nonzero operation not terminated
+Program: Connection Manager by Softwarehouse Corp. permits the sharing of
+ serial ports over an IPX or NetBIOS-based network
+Desc: end all Connection Client TSR activity to allow it to be removed from
+ memory
+SeeAlso: AH=05h/DX=FFFFh,AH=6Fh/BX=FFFFh
+--------S-140D00-----------------------------
+INT 14 - MBBIOS - GET AVAILABLE BYTES
+ AX = 0D00h
+Return: AX = bytes in transmit buffer
+ CX = bytes in receive buffer
+SeeAlso: AH=0Ah"MBBIOS",AH=0Bh"MBBIOS"
+--------S-140D01-----------------------------
+INT 14 - MBBIOS - LOWER ALL MODEM CONTROL SIGNALS
+ AX = 0D01h
+Return: nothing
+Note: this function lowers DTR, RTS, etc.
+SeeAlso: AX=0D02h
+--------S-140D02-----------------------------
+INT 14 - MBBIOS - RAISE ALL MODEM CONTROL SIGNALS
+ AX = 0D02h
+Return: nothing
+Note: this function raises DTR, RTS, etc.
+SeeAlso: AX=0D01h
+--------S-140D03-----------------------------
+INT 14 - MBBIOS - SET HANDSHAKE BYTE
+ AX = 0D03h
+ CL = new handshake byte
+Return: CL = previous handshake byte
+Note: this function lowers DTR, RTS, etc.
+--------S-140E-------------------------------
+INT 14 - FOSSIL - KEYBOARD READ WITH WAIT
+ AH = 0Eh
+Return: AX = xxyyh standard IBM-style scan code
+SeeAlso: AH=0Dh"FOSSIL"
+--------S-140E-------------------------------
+INT 14 - Digiboard DigiCHANNEL PC/X* - WRITE STRING
+ AH = 0Eh
+ CX = number of characters to write
+ ES:BX -> string
+ DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
+Return: AX = number of characters actually written
+ ZF clear if successful
+ ZF set on error
+SeeAlso: AH=0Fh"Digiboard"
+--------S-140E-------------------------------
+INT 14 - MBBIOS PACCOM support - SET PERSISTENCE
+ AH = 0Eh
+ AL = new setting (FFh = 1.0)
+Return: nothing
+Desc: specify the time from end of DCD to RTS
+SeeAlso: AH=0Dh"MBBIOS",AH=0Fh"MBBIOS"
+--------N-140E--DXFFFF-----------------------
+INT 14 - Connection Manager - SET HARDWARE FLOW STATE
+ AH = 0Eh
+ DX = FFFFh
+ AL = connection ID from AH=04h/DX=FFFFh
+ BL = RTS state (00h off, 01h on)
+Return: AH = return code (00h-03h) (see also #00303 at AH=00h/DX=FFFFh)
+ 03h invalid request (BL not 00h or 01h)
+Program: Connection Manager by Softwarehouse Corp. permits the sharing of
+ serial ports over an IPX or NetBIOS-based network
+SeeAlso: AH=03h/DX=FFFFh,AH=0Ah/DX=FFFFh
+--------S-140F-------------------------------
+INT 14 - FOSSIL - ENABLE/DISABLE FLOW CONTROL
+ AH = 0Fh
+ AL = bit mask describing requested flow control (see #00340)
+ DX = port number
+Return: nothing
+SeeAlso: AH=09h"MBBIOS",AH=10h"FOSSIL"
+
+Bitfields for FOSSIL requested flow control:
+Bit(s) Description (Table 00340)
+ 0 XON/XOFF on transmit (watch for XOFF while sending)
+ 1 CTS/RTS (CTS on transmit/RTS on receive)
+ 2 reserved
+ 3 XON/XOFF on receive (send XOFF when buffer near full)
+ 4-7 all 1
+--------S-140F-------------------------------
+INT 14 - Digiboard DigiCHANNEL PC/X* - READ STRING
+ AH = 0Fh
+ CX = number of characters to read
+ ES:BX -> buffer
+ DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
+Return: AX = number of characters read
+ ZF clear if successful
+ ZF set on error (line status or wrong number of characters)
+SeeAlso: AH=0Eh"Digiboard"
+--------S-140F-------------------------------
+INT 14 - MBBIOS PACCOM support - SET SLOT TIME
+ AH = 0Fh
+ AL = new setting in clock ticks
+Return: nothing
+Desc: specify the time from end of DCD to RTS
+SeeAlso: AH=0Dh"MBBIOS",AH=0Eh"MBBIOS",AH=10h"MBBIOS"
+--------N-140F--DXFFFF-----------------------
+INT 14 - Connection Manager - RETURN ACTIVE CONNECTION PARAMETERS
+ AH = 0Fh
+ DX = FFFFh
+ AL = connection ID
+ CX = size of buffer or 0000h to get length of returned vector
+ ES:DI -> buffer for connection parameter vector (see #00311)
+Return: AH = return code (00h-02h,06h) (see #00303 at AH=00h/DX=FFFFh)
+ CX = number of bytes which could not be returned because the given
+ buffer was too small
+Program: Connection Manager by Softwarehouse Corp. permits the sharing of
+ serial ports over an IPX or NetBIOS-based network
+SeeAlso: AH=08h/DX=FFFFh,AH=0Ah/DX=FFFFh
+--------S-1410-------------------------------
+INT 14 - FOSSIL - EXTENDED ^C/^K CHECKING AND TRANSMIT ON/OFF
+ AH = 10h
+ AL = bit mask
+ bit 0: enable/disable ^C/^K checking
+ bit 1: enable/disable the transmitter
+ DX = port number
+Return: nothing
+SeeAlso: AH=0Fh"FOSSIL"
+--------S-1410-------------------------------
+INT 14 - Digiboard DigiCHANNEL PC/X* - CLEAR RECEIVE BUFFER
+ AH = 10h
+ DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
+Return: AH = status
+ 00h successful
+ FFh error
+SeeAlso: AH=09h"Digiboard",AH=11h"Digiboard"
+--------S-1410-------------------------------
+INT 14 - MBBIOS PACCOM support - SET CRC WAIT
+ AH = 10h
+ AL = new setting in clock ticks (should be at least 5 character times)
+Return: nothing
+Desc: specify the time from start of last character to dropping RTS
+SeeAlso: AH=0Dh"MBBIOS",AH=0Fh"MBBIOS"
+--------N-1410--DXFFFF-----------------------
+INT 14 - Connection Manager - QUERY SERVICE NAMES
+ AH = 10h
+ DX = FFFFh
+ CL = subfunction
+ 00h search first
+ 01h search next
+ ES:DI -> pattern buffer (see #00341)
+Return: AH = return code (00h,01h,03h,06h) (see also #00303 at AH=00h/DX=FFFFh)
+ 01h no (more) matching names
+ 03h invalid request
+ ES:DI buffer filled with reply buffer (see #00341) containing matched
+ name if AH=00h
+Program: Connection Manager by Softwarehouse Corp. permits the sharing of
+ serial ports over an IPX or NetBIOS-based network
+Desc: obtain the names of groups and lines available for connection requests,
+ and the names of active Connection Servers
+SeeAlso: AH=04h/DX=FFFFh,AH=0Bh/DX=FFFFh
+
+Format of Connection Manager pattern/reply buffer:
+Offset Size Description (Table 00341)
+ 00h WORD length of pattern (30h or 32h)
+ 02h 16 BYTEs server pattern or name
+ 12h 16 BYTEs group pattern or name
+ 22h 16 BYTEs line pattern or name
+ 23h BYTE (optional) ???
+ 24h BYTE (optional, returned) current line status
+ 00h available
+ 01h out of service
+ 02h currently allocated to a connection
+Note: pattern may include '?' wildcard to match any character
+--------S-1411-------------------------------
+INT 14 - FOSSIL - SET CURRENT CURSOR LOCATION
+ AH = 11h
+ DH = row
+ DL = column
+Return: nothing
+Note: this is the same as INT 10/AH=02h
+SeeAlso: AH=12h"FOSSIL"
+--------S-1411-------------------------------
+INT 14 - Digiboard DigiCHANNEL PC/X* - CLEAR TRANSMIT BUFFER
+ AH = 11h
+ DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
+Return: AH = status
+ 00h successful
+ FFh error
+SeeAlso: AH=09h"Digiboard",AH=10h"Digiboard"
+--------S-1411-------------------------------
+INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - DISABLE PORT
+ AH = 11h
+ DX = port number
+Return: AL = status
+ 00h successful
+ 01h IRQ for port is shared
+ 02h IRQ was reserved
+SeeAlso: AH=04h"SERIAL",AH=05h"SERIAL",AH=12h"PC-MOS"
+--------S-1412-------------------------------
+INT 14 - FOSSIL - READ CURRENT CURSOR LOCATION
+ AH = 12h
+Return: DH = row
+ DL = column
+Note: this is the same as INT 10/AH=03h
+SeeAlso: AH=11h"FOSSIL"
+--------S-1412-------------------------------
+INT 14 - Digiboard DigiCHANNEL PC/X* - GET TRANSMIT BUFFER FREE SPACE
+ AH = 12h
+ DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
+Return: AX = number of bytes free
+SeeAlso: AH=0Ah"Digiboard",AH=14h"Digiboard"
+--------S-1412-------------------------------
+INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - GET CURRENT PORT PARAMETERS
+ AH = 12h
+ DX = port number
+Return: AH = status
+ FFh port number invalid
+ AL = line parameters (see #00304)
+ AH = flow control configuration (see #00336 at AH=05h"PC-MOS")
+ CX:BX = bps rate
+ DL = XOFF character or 00h for none
+ DH = XON character or 00h for none
+--------S-1413-------------------------------
+INT 14 - FOSSIL - SINGLE CHARACTER ANSI WRITE TO SCREEN
+ AH = 13h
+ AL = character
+Return: nothing
+Note: should not be called if it is unsafe to call DOS
+SeeAlso: AH=15h
+--------S-1413-------------------------------
+INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - REGISTER A PORT WITH A TERMINAL
+ AH = 13h
+ DX = port number
+Return: AH = status
+ FFh port number invalid
+ else
+ ES:BX -> BYTE flag (00h buffer empty, FFh buffer contains data)
+SeeAlso: AH=17h"PC-MOS"
+--------S-1414-------------------------------
+INT 14 - FOSSIL - ENABLE OR DISABLE WATCHDOG PROCESSING
+ AH = 14h
+ AL = 01h enable watchdog
+ 00h disable watchdog
+ DX = port number
+Return: nothing
+SeeAlso: INT 21/AH=2Bh/CX=6269h"WDTSR"
+--------S-1414-------------------------------
+INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - OUTPUT STRING
+ AH = 14h
+ CX = number of characters in string
+ DX = port number
+ ES:BX -> string to be sent
+ SI = timeout in timer ticks or 0000h for default
+Return: AX = number of bytes actually sent
+ ZF clear if successful
+ ZF set on timeout
+SeeAlso: AH=01h,AH=15h"PC-MOS"
+--------S-1414-------------------------------
+INT 14 - Digiboard - GET NUMBER OF BOARDS INSTALLED
+ AH = 14h
+Return: AX = number of boards installed
+SeeAlso: AH=08h"Digiboard",AH=15h"Digiboard"
+--------S-1415-------------------------------
+INT 14 - FOSSIL - WRITE CHARACTER TO SCREEN USING BIOS SUPPORT ROUTINES
+ AH = 15h
+ AL = character
+Return: nothing
+SeeAlso: AH=13h"FOSSIL"
+--------S-1415-------------------------------
+INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - INPUT STRING
+ AH = 15h
+ CX = size of buffer
+ DX = port number
+ ES:BX -> buffer for received characters
+ SI = timeout in clock ticks or 0000h for default
+Return: AX = number of characters actually read
+ ZF set on timeout (no data available)
+SeeAlso: AH=02h,AH=14h"PC-MOS",AH=16h"PC-MOS"
+--------S-1415-------------------------------
+INT 14 - Digiboard - ENABLE/DISABLE MEMORY
+ AH = 15h
+ AL = new state (00h disabled, 01h enabled)
+Return: AH = status
+ 00h successful
+ 80h error
+ FFh error
+SeeAlso: AH=14h"Digiboard",AH=16h"Digiboard"
+--------S-1416-------------------------------
+INT 14 - FOSSIL - INSERT/DELETE FUNCTION FROM TIMER TICK CHAIN
+ AH = 16h
+ AL = function
+ 00h = delete
+ 01h = add
+ ES:DX -> routine to call
+Return: AX = status
+ 0000h successful
+ 0001h unsuccessful
+SeeAlso: AH=07h"FOSSIL"
+--------S-1416-------------------------------
+INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - LINK TO ANOTHER SERIAL DRIVER
+ AH = 16h
+ ES:BX -> calling driver's INT 14 entry point
+Return: nothing
+Program: PC-MOS/386 v5.01 is a multitasking, multiuser MS-DOS 5.0-compatible
+ operating system by The Software Link, Inc.
+--------S-1416-------------------------------
+INT 14 - Digiboard DigiCHANNEL PC/X* - CCB COMMAND
+ AH = 16h
+ AL = CCB command number (see #00342) (see also following entries)
+ BL = byte 2
+ BH = byte 3
+ CL = byte 1 (for all channel functions except 4Eh and 4Fh)
+ DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
+Return: AH = status
+ 00h successful
+ 80h error
+ FFh error
+SeeAlso: AX=1646h,AH=18h"Digiboard"
+
+(Table 00342)
+Values for Digiboard CCB command number:
+ 40h Set Receive Mid Water Mark
+ 41h Set Receive High Water Mark
+ 42h Flush Receive Buffer
+ 43h Flush Transmit Buffer
+ 44h Transmit Pause
+ 45h Transmit Resume
+ 46h Set Interrupt to Host Mask
+ 47h Set Baud, Data, Stop and Parity
+ 48h Send Break
+ 49h Set Modem Lines
+ 4Ah Set Break Count
+ 4Bh Set Handshake
+ 4Ch Set Xon/Xoff Characters
+ 4Dh Set Transmit Mid Water Mark
+ 4Eh IRQ Polling Timer to Host
+ 4Fh Buffer Set All
+ 50h Port On
+ 51h Port Off
+ 52h Receive Pause
+ 53h Special Character Interrupt
+ 54h RS-422 Enable
+--------S-141646-----------------------------
+INT 14 - Digiboard - CCB COMMAND - SET INTERRUPT TO HOST MASK
+ AX = 1646h
+ BL = bits to set
+ BH = bits to clear
+ CL = byte 1
+ DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
+Return: AH = status
+ 00h successful
+ 80h error
+ FFh error
+SeeAlso: AH=16h"Digiboard",AX=1647h
+--------S-141647-----------------------------
+INT 14 - Digiboard - CCB COMMAND - SET BAUD/DATABITS/STOPBITS/PARITY
+ AX = 1647h
+ BL = baud
+ BH = datatype
+ CL = byte 1
+ DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
+Return: AH = status
+ 00h successful
+ 80h error
+ FFh error
+SeeAlso: AH=16h"Digiboard",AX=1646h,AX=1649h
+--------S-141649-----------------------------
+INT 14 - Digiboard - CCB COMMAND - SET MODEM LINES
+ AX = 1649h
+ BL = bits to set
+ BH = bits to clear
+ CL = byte 1
+ DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
+Return: AH = status
+ 00h successful
+ 80h error
+ FFh error
+SeeAlso: AH=16h"Digiboard",AX=1647h
+--------S-14164A-----------------------------
+INT 14 - Digiboard - CCB COMMAND - SET BREAK COUNT
+ AX = 164Ah
+ BL = break count
+ CL = byte 1
+ DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
+Return: AH = status
+ 00h successful
+ 80h error
+ FFh error
+SeeAlso: AH=16h"Digiboard",AX=1649h,AX=164Bh
+--------S-14164B-----------------------------
+INT 14 - Digiboard - CCB COMMAND - SET HANDSHAKE
+ AX = 164Bh
+ BL = bits to set
+ BH = bits to clear
+ CL = byte 1
+ DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
+Return: AH = status
+ 00h successful
+ 80h error
+ FFh error
+SeeAlso: AH=16h"Digiboard",AX=1649h,AX=164Ch
+--------S-14164C-----------------------------
+INT 14 - Digiboard - CCB COMMAND - SET XON/XOFF CHARACTERS
+ AX = 164Ch
+ BL = XON character
+ BH = XOFF character
+ CL = byte 1
+ DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
+Return: AH = status
+ 00h successful
+ 80h error
+ FFh error
+SeeAlso: AH=16h"Digiboard",AX=164Bh,AX=164Dh
+--------S-14164D-----------------------------
+INT 14 - Digiboard - CCB COMMAND - SET TRANSMIT MID-WATER MARK
+ AX = 164Dh
+ BX = new mid-water mark
+ CL = byte 1
+ DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
+Return: AH = status
+ 00h successful
+ 80h error
+ FFh error
+SeeAlso: AH=16h"Digiboard",AX=164Ch,AX=164Eh,AX=164Fh
+--------S-14164E-----------------------------
+INT 14 - Digiboard - CCB COMMAND - IRQ POLLING TIMER TO HOST
+ AX = 164Eh
+ BL = ticks
+ BH = ???
+ CL = mode
+ DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
+Return: AH = status
+ 00h successful
+ 80h error
+ FFh error
+SeeAlso: AH=16h"Digiboard",AX=164Dh
+--------S-14164F-----------------------------
+INT 14 - Digiboard - CCB COMMAND - BUFFER SET ALL
+ AX = 164Fh
+ BL = size
+ DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
+Return: AH = status
+ 00h successful
+ 80h error
+ FFh error
+SeeAlso: AH=16h"Digiboard",AX=164Dh
+--------S-141653-----------------------------
+INT 14 - Digiboard - CCB COMMAND - SPECIAL CHARACTER INTERRUPT
+ AX = 1653h
+ BL = enable/disable
+ BH = special character
+ CL = byte 1
+ DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
+Return: AH = status
+ 00h successful
+ 80h error
+ FFh error
+SeeAlso: AH=16h"Digiboard",AX=1646h
+--------S-1417-------------------------------
+INT 14 - FOSSIL - REBOOT SYSTEM
+ AH = 17h
+ AL = method
+ 00h = cold boot
+ 01h = warm boot
+SeeAlso: INT 16/AX=E0FFh,INT 19,INT 60/DI=0606h
+--------S-1417-------------------------------
+INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - WRITE MODEM CONTROL REGISTER
+ AH = 17h
+ AL = new value for UART's modem control register
+ DX = port number
+Return: nothing
+--------S-1418-------------------------------
+INT 14 - FOSSIL - READ BLOCK
+ AH = 18h
+ CX = maximum number of characters to transfer
+ DX = port number
+ ES:DI -> user buffer
+Return: AX = number of characters transferred
+SeeAlso: AH=19h"FOSSIL",AH=83h"COURIERS",AX=FF02h,INT 6B/AX=0100h
+--------S-1418-------------------------------
+INT 14 - Digiboard DigiCHANNEL PC/X* - SEND BIOS COMMAND
+ AH = 18h
+ ES:BX -> 16-byte command string
+ DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
+Return: AH = status
+ 00h successful
+ 80h timeout
+ AL = mailbox status
+ 00h no errors
+ 8Xh BIOS error
+ ES:BX buffer filled in with mailbox string
+ ZF clear if no errors
+ ZF set if either status byte contains an error code
+SeeAlso: AH=16h"Digiboard"
+--------S-1418-------------------------------
+INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - GET DRIVER DESCRIPTION
+ AH = 18h
+ DX = port number
+Return: DS:BX -> 40-byte buffer containing a string identifying the serial
+ driver
+SeeAlso: AH=06h"PC-MOS"
+--------S-1419-------------------------------
+INT 14 - FOSSIL - WRITE BLOCK
+ AH = 19h
+ CX = maximum number of characters to transfer
+ DX = port number
+ ES:DI -> user buffer
+Return: AX = number of characters transferred
+SeeAlso: AH=18h"FOSSIL",AH=86h,INT 6B/AX=0000h
+--------S-1419-------------------------------
+INT 14 - Digiboard DigiCHANNEL PC/X* - SPECIAL CHARACTER INTERRUPT
+ AH = 19h
+ BL = flag
+ 00h disable special character interrupt
+ FFh enable interrupt
+ DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
+Return: AH = status
+ 00h successful
+ FFh failed
+SeeAlso: AH=1Ah"Digiboard"
+--------S-1419-------------------------------
+INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - SELECTIVE BUFFER FLUSH
+ AH = 19h
+ AL = what to flush
+ bit 0: input buffer
+ bit 1: output buffer
+ DX = port number
+Return: nothing
+SeeAlso: AH=09h"PC-MOS"
+--------S-141A-------------------------------
+INT 14 - FOSSIL - BREAK BEGIN OR END
+ AH = 1Ah
+ AL = 00h stop sending 'break'
+ 01h start sending 'break'
+ DX = port number
+Return: nothing
+SeeAlso: AH=06h"FOSSIL",AH=8Ah,AH=FAh
+--------S-141A-------------------------------
+INT 14 - Digiboard DigiCHANNEL PC/X - SPECIAL CHARACTER FLAG/COUNTER
+ AH = 1Ah
+ BX = subfunction
+ 00h return pointer to special character flag byte
+ 01h return pointer to special character counter word
+ DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
+Return: ES:BX -> special character flag or counter
+Notes: flag is FFh if one or more special characters are in the receive
+ buffer; it is 00h and the counter is invalid if no special characters
+ are in the receive buffer
+ counter (if valid) contains the number of characters in the receive
+ buffer up to and including the last-received special character
+--------S-141B-------------------------------
+INT 14 - FOSSIL - RETURN INFORMATION ABOUT THE DRIVER
+ AH = 1Bh
+ DX = port number
+ CX = size of user buffer
+ ES:DI -> user buffer for driver info (see #00343)
+Return: AX = number of characters transferred
+ CX = 3058h ("0X") (X00 FOSSIL only)
+ DX = 2030h (" 0") (X00 FOSSIL only)
+
+Format of FOSSIL driver info:
+Offset Size Description (Table 00343)
+ 00h WORD size of structure in bytes
+ 02h BYTE FOSSIL spec driver conforms to
+ 03h BYTE revision level of this specific driver
+ 04h DWORD pointer to ASCIZ identification string
+ 08h WORD size of the input buffer
+ 0Ah WORD number of bytes left in buffer
+ 0Ch WORD size of the output buffer
+ 0Eh WORD number of bytes left in buffer
+ 10h BYTE width of screen
+ 11h BYTE length of screen
+ 12h BYTE actual baud rate, computer to modem
+--------S-141C-------------------------------
+INT 14 - X00 FOSSIL - ACTIVATE PORT
+ AH = 1Ch
+ DX = port number
+Return: AX = 1954h if successful
+ BL = maximum function number supported (not including 7Eh and above)
+ BH = revision of FOSSIL specification supported
+Note: this is a duplicate of AH=04h, so that AH=04h may be made compatible
+ with the PS/2 BIOS in a future release
+SeeAlso: AH=04h"FOSSIL",AH=1Dh
+--------S-141D-------------------------------
+INT 14 - X00 FOSSIL - DEACTIVATE PORT
+ AH = 1Dh
+ DX = port number
+Return: none
+Notes: this is a duplicate of AH=05h, so that AH=05h may be made compatible
+ with the PS/2 BIOS in a future release
+ ignored if the port was never activated with AH=04h or AH=1Ch
+SeeAlso: AH=05h"FOSSIL",AH=1Ch
+--------S-141E-------------------------------
+INT 14 - X00 FOSSIL - EXTENDED LINE CONTROL INITIALIZATION
+ AH = 1Eh
+ AL = break status
+ 00h if break
+ 01h if no break
+ BH = parity (see #00344)
+ BL = number of stop bits
+ 00h one stop bit
+ 01h two stop bits (1.5 if 5 bit word length)
+ CH = word length (see #00345)
+ CL = bps rate (see #00346)
+ DX = port number
+Return: AX = port status code (see #00304,#00305)
+Notes: this function is intended to exactly emulate the PS/2 BIOS AH=04h call
+ if the port was locked at X00 load time, the appropriate parameters are
+ ignored
+SeeAlso: AH=00h,AH=04h"SERIAL"
+
+(Table 00344)
+Values for X00 FOSSIL parity:
+ 00h no parity
+ 01h odd parity
+ 02h even parity
+ 03h stick parity odd
+ 04h stick parity even
+SeeAlso: #00307,#00345,#00346
+
+(Table 00345)
+Values for X00 FOSSIL word length:
+ 00h 5 bits
+ 01h 6 bits
+ 02h 7 bits
+ 03h 8 bits
+SeeAlso: #00308,#00344,#00346
+
+(Table 00346)
+Values for X00 FOSSIL bps rate:
+ 00h 110
+ 01h 150
+ 02h 300
+ 03h 600
+ 04h 1200
+ 05h 2400
+ 06h 4800
+ 07h 9600
+ 08h 19200
+SeeAlso: #00309,#00344,#00345
+--------S-141E------------------------------------
+INT 14 - HUNTER 16 - READ COMMS PARAMETERS
+ AH = 1Eh
+ CX = channel number (00h COM1, 01h COM2, ...)
+ DS:BX -> buffer for communications parameters (see #00347)
+Return: DS:BX buffer filled
+Note: the Husky Hunter 16 is an 8088-based ruggedized laptop. Other family
+ members are the Husky Hunter, Husky Hunter 16/80, and Husky Hawk.
+SeeAlso: AH=20h"HUNTER"
+
+Format of HUNTER 16 communications parameters:
+Offset Size Description (Table 00347)
+ 00h BYTE communications type (00h IBM, nonzero Husky)
+ 01h BYTE port number (00h COM1, 01h COM2)
+ 02h BYTE baud rate (00h 110 bps, 01h 150, 02h 300, 03h 600, 04h 1200,
+ 05h 2400, 06h 4800, 07h 9600, 08h 19200, 09h 38400)
+ 03h BYTE data bits (01h seven, 02h eight)
+ 04h BYTE parity (00h none, 01h odd, 02h even)
+ 05h BYTE stop bits (00h one, 01h two)
+ 06h BYTE handshake (see #00348)
+ 07h BYTE handshake protocol (00h none, 01h Xon/Xoff, 02h HWK3780)
+ 08h BYTE Nulls after CR (0-20)
+ 09h BYTE LF (00h off, 01h on)
+ 0Ah BYTE Serig. 0..7Fh: Ignore this character
+ 80h: Serig off
+ 0Bh BYTE echo (00h off, 01h on)
+ 0Ch BYTE transmit timeout in seconds (1-60) or 00h to disable
+ 0Dh BYTE receive timeout in seconds (1-60) or 00h to disable
+ 0Eh 5 BYTEs reserved
+
+Bitfields for HUNTER 16 handshake:
+Bit(s) Description (Table 00348)
+ 0-1 0: RTS off, 1: RTS hold, 2: RTS true
+ 2 DTR enabled
+ 4 CTS enabled
+ 5 DSR enabled
+ 6 DCD enabled
+--------S-141F-------------------------------
+INT 14 - X00 FOSSIL - EXTENDED SERIAL PORT STATUS/CONTROL
+ AH = 1Fh
+ DX = port number
+ AL = direction
+ 00h read modem control register
+ Return: BL = modem control register (see #00349)
+ AH = status
+ 01h write modem control register
+ BL = modem control register (see #00349)
+ Return: AX = status
+Notes: this function is intended to exactly emulate the PS/2 BIOS AH=05h call
+ X00 forces BL bit 3 set (interrupts cannot be disabled)
+SeeAlso: AH=00h,AH=05h"SERIAL"
+
+Bitfields for X00 FOSSIL modem control register:
+Bit(s) Description (Table 00349)
+ 0 data terminal ready
+ 1 request to send
+ 2 OUT1
+ 3 OUT2 (interrupts) enabled
+ 4 LOOP
+ 5-7 reserved
+--------S-1420-------------------------------
+INT 14 - X00 FOSSIL - DESTRUCTIVE READ WITH NO WAIT
+ AH = 20h
+ DX = port number
+Return: AH = 00h if character was available
+ AL = next character (removed from receive buffer)
+ AX = FFFFh if no character available
+SeeAlso: AH=0Ch,AH=21h"X00"
+--------S-1420-------------------------------
+INT 14 - Alloy MW386 - ATTACH LOGICAL COMMUNICATIONS PORT TO PHYSICAL PORT
+ AH = 20h
+ AL = logical port (01h COM1, 02h COM2)
+ DX = physical port number
+Return: AX = status
+ 0000h successful
+ FFFFh failed
+SeeAlso: AH=21h"Alloy",AH=22h"Alloy",AH=23h"Alloy",INT 17/AH=8Bh"Alloy"
+--------S-1420-------------------------------
+INT 14 - MultiDOS Plus - INITIALIZE PORT
+ AH = 20h
+ AL = port parameters (see #00300 at AH=00h"SERIAL")
+ DX = port number (0-3)
+Return: AH = status
+ 00h successful
+ 41h no such port
+ 64h monitor mode already active
+SeeAlso: AH=00h"SERIAL",AH=04h"MultiDOS",AH=21h"MultiDOS",AH=23h"MultiDOS"
+--------S-1420-------------------------------
+INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - CHECK OUTPUT QUEUE
+ AH = 20h
+ DX = port number
+Return: AX = number of bytes in output buffer
+SeeAlso: AH=0Ah"Digiboard"
+--------S-1420------------------------------------
+INT 14 - HUNTER 16 - SELECT COMMS PARAMETERS
+ AH = 20h
+ CX = channel number (00h COM1, 01h COM2, ...)
+ DS:BX -> buffer with communications parameter (see #00347)
+Return: AX = status
+ 0000h successful
+ 0001h invalid parameter
+SeeAlso: AH=1Eh"HUNTER",AH=21h"HUNTER"
+--------S-1421-------------------------------
+INT 14 - X00 FOSSIL - STUFF RECEIVE BUFFER
+ AH = 21h
+ AL = character
+ DX = port number
+Return: nothing
+Notes: the given character is inserted at the end of the receive buffer as if
+ it had just arrived from the serial port; all normal receive
+ processing (XON/XOFF, ^C/^K) is performed on the character
+ fully re-entrant
+SeeAlso: AH=20h"X00"
+--------S-1421-------------------------------
+INT 14 - Alloy MW386 v1.x only - RELEASE PHYSICAL COMMUNICATIONS PORT
+ AH = 21h
+ DX = physical port number
+Return: AX = status
+ 0000h successful
+ FFFFh failed
+SeeAlso: AH=20h"Alloy",AH=22h"Alloy"
+--------S-1421-------------------------------
+INT 14 - MultiDOS Plus - TRANSMIT CHARACTER
+ AH = 21h
+ AL = character to send
+ DX = port number
+Return: AH = status (see #00350)
+Note: monitor mode must have been turned on with AH=24h before calling
+SeeAlso: AH=20h"MultiDOS",AH=22h"MultiDOS",AH=24h"MultiDOS"
+
+(Table 00350)
+Values for MultiDOS Plus status:
+ 00h successful
+ 39h no DSR or CTS
+ 3Ch no DSR
+ 3Bh no CTS
+ 41h no such port
+ 42h monitor mode not active
+ 97h timed out
+--------S-1421-------------------------------
+INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - OUTPUT CHARACTER, WITH TIMEOUT
+ AH = 21h
+ AL = char to send
+ DX = port number
+ SI = timeout in timer ticks (0000h = default)
+Return: after character is sent or timeout expires
+Program: PC-MOS/386 v5.01 is a multitasking, multiuser MS-DOS 5.0-compatible
+ operating system by The Software Link, Inc.
+SeeAlso: AH=01h,AH=0Eh"Digiboard",AH=22h"PC-MOS"
+--------S-1421------------------------------------
+INT 14 - HUNTER 16 - EXTENDED CONTROL
+ AH = 21h
+ AL = command
+ 01h force transmission of buffer
+ 02h clear transmit buffer
+ 03h clear receive buffer
+ DX = port (00h COM1, 01h COM2)
+Return: AH = extended status
+Desc: executes the command on the selected port
+SeeAlso: AH=1Eh"HUNTER",AH=20h"HUNTER",AH=22h"HUNTER",AH=24h"HUNTER"
+--------S-1422-------------------------------
+INT 14 - Alloy MW386 v2+ - RELEASE LOGICAL COMMUNICATIONS PORT
+ AH = 22h
+ AL = logical port (01h COM1, 02h COM2)
+Return: AX = status (0000h successful)
+SeeAlso: AH=20h"Alloy",AH=21h"Alloy"
+--------S-1422-------------------------------
+INT 14 - MultiDOS Plus - RECEIVE CHARACTER
+ AH = 22h
+ DX = port number
+Return: AH = status (see also AH=21h"MultiDOS")
+ 00h successful
+ AL = character
+ 3Dh framing and parity error
+ 3Eh overrun error
+ 3Fh framing error
+ 40h parity error
+ 96h ring buffer overflow
+Note: if no character is available, this function waits until a character
+ arrives or an implementation-dependent timeout elapses
+SeeAlso: AH=20h"MultiDOS",AH=21h"MultiDOS",AH=27h
+--------S-1422-------------------------------
+INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - RECEIVE CHARACTER, WITH TIMEOUT
+ AH = 22h
+ DX = port number
+ SI = timeout in timer ticks (0000h = default)
+Return: AH = port status (see also #00304 at AH=03h)
+ bit 7 = 1 indicates time-out
+ AL = character received
+Program: PC-MOS/386 v5.01 is a multitasking, multiuser MS-DOS 5.0-compatible
+ operating system by The Software Link, Inc.
+SeeAlso: AH=02h,AH=0Fh"Digiboard",AH=21h"PC-MOS"
+--------S-1422------------------------------------
+INT 14 - HUNTER 16 - EXTENDED STATUS
+ AH = 22h
+ DX = port (00h COM1, 01h COM2)
+Return: AH = extended status
+ BX = number of characters in input buffer
+ CX = number of characters in output buffer
+Desc: returns the most recent Extended Status code for the port
+SeeAlso: AH=21h"HUNTER"
+--------S-1423-------------------------------
+INT 14 - Alloy MW386 v2+ - GET PORT NUMBER FROM LOGICAL PORT ID
+ AH = 23h
+ AL = logical port (01h COM1, 02h COM2)
+ DH = user ID
+ DL = process ID (DH,DL both FFh for current task)
+Return: AL = MW386 port mode (see #00351)
+ CX = MW386 port number
+ DH = owner's user ID
+ DL = owner's task ID
+SeeAlso: AH=20h"Alloy",INT 17/AH=8Bh"Alloy"
+
+Bitfields for MW386 port mode:
+Bit(s) Description (Table 00351)
+ 0 port is shared (spooler only)
+ 1 port is spooled instead of direct (spooler only)
+ 2 port is assigned as logical COM device, not in spooler
+ 3 port is free
+--------S-1423-------------------------------
+INT 14 - MultiDOS Plus - GET PORT STATUS
+ AH = 23h
+ DX = port number
+Return: AH = line status (see #00304 at AH=03h)
+ AL = modem status (see #00305 at AH=03h)
+SeeAlso: AH=03h,AH=07h"MultiDOS",AH=20h"MultiDOS"
+--------S-1423-------------------------------
+INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - DECLARE PORT OWNERSHIP
+ AH = 23h
+ DX = port number
+ BX = TCB segment/selector address of owner task
+Return: nothing
+SeeAlso: AH=0Dh"Digiboard",AH=21h"PC-MOS",AH=22h"PC-MOS"
+--------S-1423------------------------------------
+INT 14 - HUNTER 16 - CONTROL HANDSHAKE LINES
+ AH = 23h
+ BH = handshake line to set (00h RTS, 01h DTR)
+ BL = new level (00h low, 01h high)
+Return: nothing
+Desc: sets the handshake lines of COM1 to the desired level
+SeeAlso: AH=21h"HUNTER",AH=24h"HUNTER"
+--------S-1424-------------------------------
+INT 14 - Alloy MW386 v2+ - CHANGE PHYSICAL PORT PARAMETERS
+ AH = 24h
+ CX = physical I/O port number
+ DS:DX -> configuration table (see #00352)
+Return: AH = 00h
+Note: invalid port numbers are merely ignored
+SeeAlso: INT 17/AH=96h
+
+Format of Alloy MW386 configuration table:
+Offset Size Description (Table 00352)
+ 00h BYTE baud rate (see #00353)
+ 01h BYTE data bits (00h=5, 01h=6, 02h=7, 03h=8)
+ 02h BYTE parity (00h none, 01h odd, 02h even)
+ 03h BYTE stop bits (00h=1, 01h=2)
+ 04h BYTE receive flow control
+ 00h none, 01h XON/XOFF, 02h DTR/DSR, 03h XPC, 04h RTS/CTS
+ 05h BYTE transmit flow control (as for receive)
+
+(Table 00353)
+Values for Alloy MW386 baud rate:
+ 00h 38400
+ 01h 19200
+ 02h 9600
+ 03h 7200
+ 04h 4800
+ 05h 3600
+ 06h 2400
+ 07h 2000
+ 08h 1200
+ 09h 600
+ 0Ah 300
+ 0Bh 150
+ 0Ch 134.5
+SeeAlso: #00309
+--------S-1424-------------------------------
+INT 14 - MultiDOS Plus - SET MONITOR MODE
+ AH = 24h
+ AL = port status storage
+ 00h single status for entire receive buffer
+ 01h separate status kept for each byte in receive buffer
+ DX = port number
+Return: AH = status
+ 00h successful
+ 3Ah invalid status storage specified
+ 41h no such port
+ 64h monitor mode already active
+Note: in monitor mode, MultiDOS redirects all BIOS video output to a serial
+ port
+SeeAlso: AH=20h"MultiDOS",AH=25h
+--------S-1424-------------------------------
+INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - ???
+ AH = 24h
+Return: ???
+Program: PC-MOS/386 v5.01 is a multitasking, multiuser MS-DOS 5.0-compatible
+ operating system by The Software Link, Inc.
+--------S-1424------------------------------------
+INT 14 - HUNTER 16 - CONTROL CTS HANDSHAKING
+ AH = 24h
+ AL = new CTS handshake state for COM1 (00h disabled, 01h enabled)
+Return: nothing
+SeeAlso: AH=23h"HUNTER",AH=25h"HUNTER",AH=26h"HUNTER"
+--------S-1425-------------------------------
+INT 14 - MultiDOS Plus - CLEAR BUFFERS
+ AH = 25h
+ AL = function
+ 00h only clear buffers
+ 01h clear buffers and deactivate
+ DX = port number
+Return: AH = status
+ 00h successful
+ 3Ah invalid function
+ 41h no such port
+ 42h monitor mode not active
+SeeAlso: AH=20h"MultiDOS",AH=24h"MultiDOS"
+--------S-1425------------------------------------
+INT 14 - HUNTER 16 - CONTROL RS232 DRIVERS
+ AH = 25h
+ AL = new state of RS232 drivers (00h off, 01h on)
+Return: nothing
+Note: this function can be used to save power by turning off the RS232
+ drivers. It can also be used to turn on the RS232 drivers before
+ connecting to a remote system to avoid "garbage" while the drivers
+ turn on.
+SeeAlso: AH=23h"HUNTER",AH=24h"HUNTER",AH=26h"HUNTER"
+--------S-1426------------------------------------
+INT 14 - HUNTER 16 - CONTROL RI POWER UP
+ AH = 26h
+ AL = 00h enable RI power up
+ else disable RI power up
+Return: nothing
+Desc: control whether the Ring Indicator handshake can power up the Hunter
+--------S-1427-------------------------------
+INT 14 - MultiDOS Plus - GET BUFFER CHARACTER COUNT
+ AH = 27h
+ DX = port number
+Return: AH = status
+ 00h successful
+ 41h no such port
+ 42h monitor mode not active
+ AL = number of characters in receive buffer
+--------S-1427------------------------------------
+INT 14 - HUNTER 16 - GET INSTALLED PROTOCOLS COUNT
+ AH = 27h
+ AL = number of extended protocols installed (since last call)
+Return: AL = total number installed, including new ones
+Desc: Returns the number of extended communication protocols installed
+SeeAlso: AH=25h"HUNTER",AH=28h"HUNTER"
+--------S-1428------------------------------------
+INT 14 - HUNTER 16 - GET PROTOCOL NAME
+ AH = 28h
+ AL = protocol handle
+ DS:BX -> 8 character buffer for protocol name
+Return: AH = status
+ 00h successful
+ DS:BX buffer filled with the protocol name
+ FFh failed
+SeeAlso: AH=27h"HUNTER",AH=29h"HUNTER"
+--------S-1429------------------------------------
+INT 14 - HUNTER 16 - GET PROTOCOL HANDLE
+ AH = 29h
+ DS:BX -> buffer containing the protocol name
+Return: AH = status
+ 00h successful
+ AL = handle
+ FFh failed
+SeeAlso: AH=28h"HUNTER",AH=2Ah"HUNTER"
+--------S-142A------------------------------------
+INT 14 - HUNTER 16 - EXTENDED PROTOCOL MENU
+ AH = 2Ah
+ AL = protocol handle
+Return: AH = status
+ 00h successful
+ FFh failed
+ AL = menu handle
+SeeAlso: AH=29h"HUNTER",AH=2Bh"HUNTER"
+--------S-142B------------------------------------
+INT 14 - HUNTER 16 - GET EXTENDED PROTOCOL PARAMETERS
+ AH = 2Bh
+ AL = protocol handle
+ DS:BX -> buffer for extended protocol parameters
+Return: AH = status
+ 00h successful
+ DS:BX buffer filled with extended parameters
+ FFh failed
+SeeAlso: AH=2Ah"HUNTER"
+--------S-142C00----------------------------------
+INT 14 - HUNTER 16 - GET DTR
+ AX = 2C00h
+Return: AH = 00h
+ BL = current state
+ 00h normal DTR operation
+ else DTR is forced high
+Desc: Indicates whether the DTR signal on COM1 is forced high
+Note: the Husky Hunter 16 is an 8088-based ruggedized laptop. Other family
+ members are the Husky Hunter, Husky Hunter 16/80, and Husky Hawk.
+SeeAlso: AH=2Ch"SET DTR"
+--------S-142C------------------------------------
+INT 14 - HUNTER 16 - SET DTR
+ AH = 2Ch
+ AL nonzero
+ BL = new state
+ 00h normal operation
+ else force DTR high
+Return: AH = 00h
+Desc: determine whether the DTR signal on COM1 should be forced high
+SeeAlso: AX=2C00h
+--------N-1436-------------------------------
+INT 14 - ComShare - INSTALLATION CHECK
+ AH = 36h
+Return: AX = 4353h ('CS') if installed
+ BX = bitmap of installed ports (bit 0: COM1 is gateway, etc.)
+ CX reserved for future use
+ WORD DX:[0100h] = ComShare version number
+Program: The ComShare System is a modem-sharing program for NetBIOS and
+ NetWare-based networks by NashaKala Corporation
+Note: ComShare supports the standard BIOS INT 14h calls with a slight
+ change in the interpretation of speed values
+ (see #00309 at AH=04h"SERIAL")
+SeeAlso: AH=00h"SERIAL",AH=04h"SERIAL",AX=F4FFh
+--------t-144000-----------------------------
+INT 14 - I1541 - INSTALLATION CHECK
+ AX = 4000h
+Return: AX = 1541h if installed
+ BH = I1541 major version (BCD)
+ BL = I1541 minor version (BCD)
+ CX = 0000h
+--------t-144001-----------------------------
+INT 14 - I1541 - TEST IF 1541 CABLE CONNECTED
+ AX = 4001h
+Return: CF clear if connected
+ BL = LPT number where 1541 cable is connected (1..3)
+ CF set if cable not connected
+Desc: scan all the LPT ports searching for the adapter cable
+SeeAlso: AX=4000h
+--------t-144002-----------------------------
+INT 14 - I1541 - SELECT LPT PORT FOR OUTPUT
+ AX = 4002h
+ BL = LPT number (1..3)
+Return: CF clear if successful
+ CF set otherwise
+Desc: force the input output routines to work on the cable placed on LPT BL
+SeeAlso: AX=4001h
+--------t-144003-----------------------------
+INT 14 - I1541 - RESET ALL DEVICES
+ AX = 4003h
+Return: nothing
+Desc: send a reset pulse of 100ms to all CBM devices
+Note: it is necessary to wait about 2 seconds after reset before executing
+ other instructions
+SeeAlso: AX=4000h,AX=4004h
+--------t-144004-----------------------------
+INT 14 - I1541 - SEND LISTEN SIGNAL
+ AX = 4004h
+ BH = device number (0..15)
+Return: CF clear if successful
+ CF set on error
+ AL = error number (see #00354)
+SeeAlso: AX=4005h,AX=4006h
+
+(Table 00354)
+Values for I1541 error number:
+ 00h device not present
+ 01h listener not ready
+ 02h missing EOI time-out
+ 03h EOI not completed
+ 04h data not released
+ 05h frame error
+--------t-144005-----------------------------
+INT 14 - I1541 - SEND SECONDARY ADDRESS FOR LISTEN
+ AX = 4005h
+ BL = channel number and mode (see #00355)
+Return: CF clear if successful
+ CF set on error
+ AL = error number (see #00354)
+SeeAlso: AX=4004h,AX=4006h
+
+Bitfields for I1541 channel number and mode:
+Bit(s) Description (Table 00355)
+ 7-4 mode
+ 0110 read/write
+ 1110 close channel
+ 1111 open channel
+ 3-0 channel number
+--------t-144006-----------------------------
+INT 14 - I1541 - SEND UNLISTEN SIGNAL
+ AX = 4006h
+Return: CF clear if successful
+ CF set on error
+ AL = error number (see #00354)
+SeeAlso: AX=4004h,AX=4005h
+--------t-144007-----------------------------
+INT 14 - I1541 - SEND TALK SIGNAL
+ AX = 4007h
+ BH = device number (0-15)
+Return: CF clear if successful
+ CF set on error
+ AL = error number (see #00354)
+SeeAlso: AX=4008h,AX=4009h
+--------t-144008-----------------------------
+INT 14 - I1541 - SEND SECONDARY ADDRESS FOR TALK
+ AX = 4008h
+ BL = channel number and mode (see #00355)
+Return: CF clear if successful
+ CF set on error
+ AL = error number (see also #00354)
+ 40h turn around time-out
+SeeAlso: AX=4007h,AX=4009h
+--------t-144009-----------------------------
+INT 14 - I1541 - SEND UNTALK SIGNAL
+ AX = 4009h
+Return: CF clear if successful
+ CF set on error
+ AL = error number (see #00354)
+SeeAlso: AX=4007h,AX=4008h
+--------t-14400A-----------------------------
+INT 14 - I1541 - SEND A BYTE TO A DEVICE
+ AX = 400Ah
+ BL = byte to send
+ CL = last-byte flag
+ 00h more bytes follow
+ 01h this is the last byte to be sent
+Return: CF clear if successful
+ CF set on error
+ AL = error number (see #00354)
+SeeAlso: AX=4000h,AX=400Bh
+--------t-14400B-----------------------------
+INT 14 - I1541 - RECEIVE A BYTE FROM A DEVICE
+ AX = 400Bh
+Return: CF clear if successful
+ AL = byte received
+ CL = last-byte flag
+ 00h more bytes to follow
+ 01h received byte is the last
+ CF set on error
+ AL = error number
+ 80h EOI response required
+ 81h talker not ready
+ 82h clock not set
+ 83h clock not released
+ CL = 00h
+SeeAlso: AX=4000h,AX=400Ah
+--------t-14400C-----------------------------
+INT 14 - I1541 - WAIT
+ AX = 400Ch
+ CX = number of 838ns microticks to wait (0000h means 65536, ~55ms)
+Return: after wait period elapses
+SeeAlso: AX=4000h,AX=400Dh
+--------t-14400D-----------------------------
+INT 14 - I1541 - LONGWAIT
+ AX = 400Dh
+ DX:CX = number of 838ns microticks to wait
+ (0000h:0000h means 4294967296, about one hour)
+Example: To wait 1s you must set DX:CX=(1s/838ns)=1193180
+SeeAlso: AX=4000h,AX=400Ch
+--------t-14400E-----------------------------
+INT 14 - I1541 - GET INFO
+ AX = 400Eh
+Return: AX = LPT port I/O address in use (0000h if no cable in use)
+ BL = LPT number (1..3) in use (00h if no cable in use)
+ CF set if the cable is auto-detectable
+ CF clear if cable could not be auto-detected or is not present
+SeeAlso: AX=4000h
+--------S-1456-------------------------------
+INT 14 U - BWCOM14 - INSTALLATION CHECK
+ AH = 56h
+Return: CX = 0001h if installed
+Program: BWCOM14 is a network serial port emulator (simulating a Hayes modem
+ connected to the serial port) distributed as part of the
+ Beame&Whiteside BW-NFS package
+SeeAlso: AH=57h,AH=58h,INT 2F/AX=DF00h/BX=5445h
+--------S-1457-------------------------------
+INT 14 U - BWCOM14 - INITIALIZE
+ AH = 57h
+ DL = port number
+Return: AL = initialization status (00h successful, 01h already initialized)
+ CX = port status (0001h port redirected, 0002h and FFFFh failed)
+Note: after this call, all invocations of INT 14/AH=00h-03h for the specified
+ port will be handled by BWCOM14 until AH=58h is called
+SeeAlso: AH=00h"SERIAL",AH=56h,AH=58h
+--------S-1458-------------------------------
+INT 14 U - BWCOM14 - SHUTDOWN
+ AH = 58h
+Return: CX = status (0001h successful, 0002h not initialized)
+Note: after this call, BWCOM14 will no longer redirect the COM port
+SeeAlso: AH=56h,AH=57h
+--------N-146F--BXFFFE-----------------------
+INT 14 U - Connection Manager - ???
+ AH = 6Fh
+ BX = FFFEh
+ ???
+Return: ???
+Program: Connection Manager by Softwarehouse Corp. permits the sharing of
+ serial ports over an IPX or NetBIOS-based network
+--------N-146F--BXFFFF-----------------------
+INT 14 - Connection Manager - INSTALLATION CHECK
+ AH = 6Fh
+ BX = FFFFh
+Return: DX:BX -> Connection Manager Communication Table if installed
+ BX = FFFFh if not installed
+SeeAlso: AH=0Dh/DX=FFFFh
+--------S-146F00-----------------------------
+INT 14 - HP Vectra EX-BIOS - "F14_INQUIRE" - INSTALLATION CHECK
+ AX = 6F00h
+ BX <> 4850h (usually set to 0000h for simplicity)
+Return: BX = 4850h ("HP") if HP Extended BIOS serial port extensions available
+ AX destroyed
+Note: supported by original HP Vectra AT and by ES/QS/RS series Vectras
+SeeAlso: AX=6F01h,AX=6F02h,AX=6F03h,AX=6F04h,INT 10/AX=6F00h,INT 14/AX=6F00h
+SeeAlso: INT 17/AX=6F00h,INT 33/AX=6F00h
+--------S-146F01-----------------------------
+INT 14 - HP Vectra EX-BIOS - "F14_EXINIT" - INITIALIZE SERIAL PORT
+ AX = 6F01h
+ BX = port attributes (see #00356)
+ DX = port number (0-3)
+Return: AH = line status (see #00304)
+ AL = modem status (see #00305)
+Note: supported by original HP Vectra AT and by ES/QS/RS series Vectras
+SeeAlso: AX=6F00h
+
+Bitfields for HP Vectra Extended BIOS serial port attributes:
+Bit(s) Description (Table 00356)
+ 8-5 data rate (110, 150, 300, 600, 1200, 2400, 4800, 9600, 19200)
+ 4-3 parity
+ 00 none
+ 01 odd
+ 10 none
+ 11 even
+ 2 stop bits (0 = one, 1 = two)
+ 1-0 bits per character
+ 10 seven-bit characters
+ 11 eight-bit characters
+ 0x undefined
+--------S-146F02-----------------------------
+INT 14 - HP Vectra EX-BIOS - "F14_PUT_BUFFER" - TRANSMIT BUFFER
+ AX = 6F02h
+ CX = number of characters in buffer
+ DX = port number (0-3)
+ ES:DI -> buffer containing characters
+Return: AH = line status (see #00304)
+ AL = modem status (see #00305)
+ CX = number of bytes actually sent
+ ES:DI -> next byte to be transferred (unchanged if all bytes sent)
+Desc: send characters from the specified buffer until all characters have
+ been sent or an error/timeout is encountered
+Note: supported by original HP Vectra AT and by ES/QS/RS series Vectras
+SeeAlso: AX=6F00h,AX=6F03h,AX=6F04h,INT 17/AX=6F02h
+--------S-146F03-----------------------------
+INT 14 - HP Vectra EX-BIOS - "F14_GET_BUFFER" - READ DATA INTO BUFFER
+ AX = 6F03h
+ CX = size of buffer
+ DX = port number (0-3)
+ ES:DI -> buffer for received characters
+Return: AH = line status (see #00304)
+ ---on error (AH bit 7 set)---
+ AL = 00h
+ ES:DI -> next byte to be transferred
+ ---if successful---
+ AL = last byte read
+ ES:DI unchanged
+ CX = number of bytes read
+Desc: read characters into the specified buffer until the buffer is filled
+ or a timeout occurs
+Notes: supported by original HP Vectra AT and by ES/QS/RS series Vectras
+ polls the Data Set Ready modem status and Data Ready line status bits
+ to determine when characters are available
+SeeAlso: AX=6F00h,AX=6F02h,AX=6F04h
+--------S-146F04-----------------------------
+INT 14 - HP Vectra EX-BIOS - "F14_TRM_BUFFER" - READ UNTIL TERMINATOR
+ AX = 6F04h
+ BL = lowest termination character
+ BH = highest termination character
+ CX = size of buffer
+ DX = port number (0-3)
+ ES:DI -> buffer for received characters
+Return: AH = line status (see #00304)
+ ---on error (AH bit 7 set)---
+ AL = 00h
+ ES:DI -> next byte to be transferred
+ ---if successful---
+ AL = last byte read
+ ES:DI unchanged
+ CX = number of bytes read
+Desc: read characters into the specified buffer until the buffer is filled,
+ a character in the specified range is received, or a timeout occurs
+Notes: supported by original HP Vectra AT and by ES/QS/RS series Vectras
+ polls the Data Set Ready modem status and Data Ready line status bits
+ to determine when characters are available
+SeeAlso: AX=6F00h,AX=6F02h,AX=6F03h
+--------U-147000-----------------------------
+INT 14 - NEWCOM - INSTALLATION CHECK
+ AX = 7000h
+Return: AX = 4E43h ('NC') if installed
+ BX = 4F4Dh ('OM') if installed
+ CH = major version number
+ CL = minor version number
+ DH = patch level
+ DL = language (currently: 00h English, 01h French)
+Program: Newcom is a DOS commandline-enhancer by kilobug@kali.isicom.fr
+SeeAlso: INT 2F/AX=D44Dh
+--------S-147E-------------------------------
+INT 14 - FOSSIL - INSTALL AN EXTERNAL APPLICATION FUNCTION
+ AH = 7Eh
+ AL = code assigned to external application (80h-BFh)
+ 80h reserved for communications FOSSIL
+ 81h video FOSSIL
+ 82h reserved for keyboard FOSSIL
+ 83h reserved for system FOSSIL
+ ES:DX -> entry point
+Return: AX = 1954h
+ BL = code assigned to application (same as input AL)
+ DH = status
+ 00h failed
+ 01h successful
+SeeAlso: AH=7Fh,AH=80h"FOSSIL",AX=8100h,AH=82h"FOSSIL",AH=83h"FOSSIL"
+--------S-147F-------------------------------
+INT 14 - FOSSIL - REMOVE AN EXTERNAL APPLICATION FUNCTION
+ AH = 7Fh
+ AL = code assigned to external application
+ ES:DX -> entry point
+Return: AX = 1954h
+ BL = code assigned to application (same as input AL)
+ DH = status
+ 00h failed
+ 01h successful
+SeeAlso: AH=7Eh
+--------S-1480-------------------------------
+INT 14 - COMMUNICATIONS FOSSIL
+ AH = 80h
+SeeAlso: AH=7Eh
+--------S-1480-------------------------------
+INT 14 - COURIERS.COM - INSTALLATION CHECK
+ AH = 80h
+Return: AH = E8h if loaded
+Program: COURIERS is a TSR utility by PC Magazine
+--------S-148000-----------------------------
+INT 14 - ARTICOM - INSTALLATION CHECK
+ AX = 8000h
+Return: AL = FFh if installed
+ BH = major version
+ BL = minor version
+Program: ArtiCom is an asynchronous communications driver by Artisoft which
+ works on top of NetBIOS and allows modem/serial-port sharing by
+ programs using INT 14 for serial I/O.
+Note: ArtiCom supports 32 simultaneous COM ports using multiport cards and
+ drivers
+SeeAlso: AH=00h"SERIAL",AH=01h,AH=02h,AH=03h,AH=04h"SERIAL",AH=05h"SERIAL"
+SeeAlso: AX=8001h,AX=8002h
+--------S-148000-----------------------------
+INT 14 - COMM-DRV v14.0 - READ PORT METRICS - GET ERROR CODE AND BUFFER STATUS
+ AX = 8000h
+ DX = port number
+Return: AX = code for last error (see #00357)
+ BX = number of characters in output buffer
+ CX = nubmer of characters in input buffer
+ DX = state flag (see #00358)
+Program: COMM-DRV is a universal serial communications driver by Willies'
+ Computer Software Company, which supports standard INT 14 and
+ FOSSIL calls as well as its own interfaces
+SeeAlso: AX=8001h"COMM-DRV",AX=8002h"COMM-DRV",AX=8003h"COMM-DRV"
+
+(Table 00357)
+Values for COMM-DRV error code:
+ 00h no error
+ 01h buffer not set or attempted to change buffer for active port
+ 02h port not active
+ 03h transmit buffer full
+ 04h receive buffer full
+ 05h syntax error
+ 06h invalid buffer size
+ 07h invalid port
+ 08h handler changed
+ 09h invalid baud rate
+ 0Ah invalid parity setting
+ 0Bh invalid data length
+ 0Ch invalid number of stop bits
+ 0Dh invalid protocol number
+ 0Eh IRQ changed
+ 0Fh port changged
+ 10h invalid threshold setting
+ 11h invalid IRQ number
+ 12h interrupts not enabled
+ 13h invalid break syntax
+ 14h fatal error
+ 15h CTS error
+ 16h invalid RS232 I/O port address
+ 17h environment variable not set
+ 18h error on IOCTL call
+ 19h error during atexit cleanup
+ 1Ah error mapping for direct calls
+ 1Bh error opening device
+ 1Ch unable to allocate memory
+ 1Dh error on external micro card
+ 1Eh card changed error
+ 1Fh card type error
+ 20h not supported
+ 21h parent port error
+ 22h card command buffer full
+ 23h no subdevice for this port
+ 24h unknown error
+ 25h external card busy
+ 26h no more timers available
+ 27h INT 14 vector changed
+ 28h INT 08 vector changed
+ 29h DPMI error
+ 2Ah TSR buffer too small (or nonexistent)
+ 2Bh out of asynchronous resources
+ 2Ch out of timer resources
+ 2Dh out of "other" timer resources
+ 2Eh file I/O error
+ 2Fh hardware memory > 64K
+
+Bitfields for state flag :
+Bit(s) Description (Table 00358)
+ 0 port is active
+ 1 output throttled (XOFF received, or DSR or CTS reset)
+ 2 input throttled (XOFF sent, or DTR or RTS reset)
+--------S-148001-----------------------------
+INT 14 - ARTICOM - UNLOAD ASYNCHRONOUS REDIRECTOR FROM MEMORY
+ AX = 8001h
+Return: AX = error code, if error (see #00360)
+SeeAlso: AX=8000h"ARTICOM",AX=8002h"ARTICOM",AX=8003h"ARTICOM"
+Index: uninstall;ARTICOM
+--------S-148001-----------------------------
+INT 14 - COMM-DRV v14.0 - READ PORT METRICS - GET PORT PARAMETERS
+ AX = 8001h
+ DX = port number
+Return: BX:DI -> Port Control Block (see #00367)
+SeeAlso: AX=8000h"COMM-DRV",AX=8002h"COMM-DRV",AX=8003h"COMM-DRV"
+--------S-148002-----------------------------
+INT 14 - ARTICOM - GET ASYNCHRONOUS REDIRECTOR STATUS
+ AX = 8002h
+ ES:DI -> buffer for redirector status structure (see #00359)
+Return: AX = error code, if error (see #00360)
+SeeAlso: AX=8000h"ARTICOM",AX=8003h"ARTICOM"
+
+Format of ARTICOM redirector status:
+Offset Size Description (Table 00359)
+ 00h WORD redirector major and minor version numbers
+ 02h WORD redirectable ports found
+ 04h WORD redirectable ports + local ports found
+ 06h WORD redirector internal buffer size
+ 08h WORD maximum servers maintained
+ 0Ah WORD number of adapters found
+--------S-148002-----------------------------
+INT 14 - COMM-DRV v14.0 - READ PORT METRICS - GET PORT PARAMETERS
+ AX = 8002h
+ DX = port number
+Return: AH bit 7 set on error
+ AH bit 7 clear if successful
+ BX:DI -> Port Control Block (see #00367) (modifyable portion only)
+SeeAlso: AX=8000h"COMM-DRV",AX=8001h"COMM-DRV",AX=8003h"COMM-DRV"
+--------S-148003-----------------------------
+INT 14 - ARTICOM - TRANSLATE ERROR CODE TO ERROR STRING
+ AX = 8003h
+ CX = error number to translate (see #00360)
+Return: ES:DI -> ASCIZ error text or 0000h:0000h if unable to translate
+SeeAlso: AX=8000h
+
+(Table 00360)
+Values for ARTICOM error codes:
+ 00h "No error"
+ 01h "An invalid port number was specified"
+ 02h "Port is already redirected"
+ 03h "Too many ports redirected"
+ 04h "Cannot locate the server"
+ 05h "Server is busy"
+ 06h "Access denied"
+ 07h "Resource in use"
+ 08h "Resource in use - request queued"
+ 09h "No such resource"
+ 0Ah "Invalid username/password pair"
+ 0Bh "Noncompatible version number"
+ 0Ch "Can't remove from memory"
+ 0Dh "Bad NETBIOS adapter number"
+ 0Eh "No more entries in list"
+ 0Fh "Resource is not available at this time"
+ 10h "Invalid value to INT 14 call"
+--------S-148003-----------------------------
+INT 14 - COMM-DRV v14.0 - READ PORT METRICS - GET I/O BUFFER SIZES
+ AX = 8003h
+ DX = port number
+Return: AX = number of characters in input buffer
+ BX = input buffer size
+ CX = number of characters in output buffer
+ DX = output buffer size
+SeeAlso: AX=8000h"COMM-DRV",AX=8001h"COMM-DRV",AX=8002h"COMM-DRV"
+--------S-148004-----------------------------
+INT 14 - ARTICOM - ATTACH ASYNCHRONOUS RESOURCE
+ AX = 8004h
+ DX = port to redirect (COM1=0, COM2=1, ...)
+ CH = attach type
+ CL = adapter to use for attach, 0FFh to search all
+ ES:DI -> attachment structure (see #00361)
+Return: AX = error code, if error (see #00360)
+Note: The wildcard '*' is supported in the server and resource fields. If
+ wild cards are used then the first matching available server is
+ attached.
+SeeAlso: AX=8000h,AX=8003h,AX=8005h
+
+Format of ARTICOM attachment structure:
+Offset Size Description (Table 00361)
+ 00h 16 BYTEs server to look for attach
+ 10h 16 BYTEs attach to resource name
+ 20h 16 BYTEs username for attach
+ 30h 16 BYTEs password for username or resource
+ 40h BYTE attach type
+ 00h normal
+ 01h queue if resource is in use (not yet supported in v1.00)
+--------S-148005-----------------------------
+INT 14 - ARTICOM - DETACH ASYNCHRONOUS RESOURCE
+ AX = 8005h
+ DX = port to detach (COM1=0, COM2=1, ...)
+Return: AX = error code, if error (see #00360)
+Note: only a previously attached resource can be detached
+SeeAlso: AX=8000h,AX=8003h,AX=8004h
+--------S-148006-----------------------------
+INT 14 - ARTICOM - GET RESOURCE INFORMATION
+ AX = 8006h
+ BX = remote port (COM1=0, COM2=1, ...)
+ CL = adapter number, FFh to try all adapters
+ ES:DI -> resource information structure (see #00362)
+ DS:SI -> 16 byte server name. See note.
+Return: AX = error code, if error (see #00360)
+ BX = next remote port, recall to get next resource info
+Note: Wild cards supported in both the resource field and server name
+ string DS:SI. If wild cards used then first matching available
+ resource information is searched. Set the resource field to FFh to
+ return all resources.
+SeeAlso: AX=8000h,AX=8002h,AX=8003h,AX=8007h
+
+Format of ARTICOM resource information structure:
+Offset Size Description (Table 00362)
+ 00h BYTE 00h = free, else used
+ 01h 16 BYTEs resource name
+ 11h 16 BYTEs username of resource user
+ 21h WORD amount of time used
+ 23h WORD amount of time remaining
+ 53h 48 BYTEs description of resource
+ 93h 64 BYTEs initialization string for modem
+ B3h 32 BYTEs dial string for modem
+ D3h 32 BYTEs hang-up string for modem
+--------S-148007-----------------------------
+INT 14 - ARTICOM - GET REDIRECTED PORT INFORMATION
+ AX = 8007h
+ DX = port index (COM1=0, COM2=1, ...)
+ ES:DI -> buffer for port information structure (see #00363)
+Return: CF clear if redirection info returned and port is redirected
+ CF set if not a redirected port
+ AX = error code, if error (see #00360)
+SeeAlso: AX=8000h,AX=8003h,AX=8006h,AX=8008h
+
+Format of ARTICOM port information structure:
+Offset Size Description (Table 00363)
+ 00h 16 BYTEs server name resource is on
+ 10h BYTE adapter number server is on
+ 11h 16 BYTEs resource name
+ 21h WORD remote port index, use to get additional information
+ 23h WORD buffer size
+ 25h WORD baud rate (see #00364)
+ 26h BYTE modem status register
+ 27h BYTE modem control register
+ 28h BYTE line status register
+ 29h BYTE line control register
+ 2Ah BYTE flow control in use: 0 - NONE, 1 - XON/XOFF, 2 - RTS/CTS
+ 2Bh WORD send timeout in ticks
+ 2Dh WORD receive timeout in ticks
+ 2Fh WORD time used on remote port
+ 31h WORD time left before timeout
+ 33h BYTE if server changes allowed?
+ 34h WORD FFFFh (-1) if connection ok, else old port index
+
+(Table 00364)
+Values for ARTICOM baud rate:
+ 00h 110
+ 01h 150
+ 02h 300
+ 03h 600
+ 04h 1200
+ 05h 2400
+ 06h 4800
+ 07h 9600
+ 08h 19200
+ 09h 38400
+ 0Ah 57600
+ 0Bh 115200
+ 0Ch 134.5
+ 0Dh 1800
+ 0Eh 2000
+ 0Fh 3600
+ 10h 7200
+SeeAlso: #00309
+--------S-148008-----------------------------
+INT 14 - ARTICOM - GET AVAILABLE SERVER NAME
+ AX = 8008h
+ BX = server index (0,1,...)
+ ES:DI -> server name structure (see #00365)
+Return: AX = error code, if error (see #00360)
+ BX = next remote port, repeat call to get next available server
+Note: the wildcard '*' is supported in the server name field. Set the
+ server name to FFh to search for all servers.
+SeeAlso: AX=8000h,AX=8003h,AX=8007h
+
+Format of ARTICOM server name structure:
+Offset Size Description (Table 00365)
+ 00h 16 BYTEs (call) ASCIZ server name
+ 10h BYTE (ret) the adapter server is found
+--------S-148009-----------------------------
+INT 14 - ARTICOM - SET SEND AND RECEIVE TIMEOUTS
+ AX = 8009h
+ BX = send timeout in ticks
+ CX = receive timeout in ticks
+ DX = port index (COM1=0, COM2=1, ...)
+Return: nothing
+SeeAlso: AX=8000h,AX=800Ah
+--------S-14800A-----------------------------
+INT 14 - ARTICOM - MODIFY FLOW CONTROL
+ AX = 800Ah
+ BL = flow control type (00h none, 01h XON/XOFF, 02h RTS/CTS)
+ DX = port index (COM1=0, COM2=1, ...)
+Return: AX = error code, if error (see #00360)
+Note: for attached ports only!
+SeeAlso: AX=8000h,AX=8003h,AX=8009h
+--------S-148025-----------------------------
+INT 14 - ARTICOM - SET INTERNAL SEND/RECEIVE VECTOR
+ AX = 8025h
+ DS:DX -> address of trap function (see #00366) to call on read/write
+Return: nothing
+Note: setting the vector to a user function allows the redirector's activity
+ to be monitored.
+SeeAlso: AX=8000h,AX=8035h,INT 21/AH=25h
+
+(Table 00366)
+Values ARTICOM trap function is called with:
+ AH = operation
+ 80h reading character
+ 81h writing character
+ AL = character
+Return: AX must be preserved
+ far JUMP to old trap function (see AX=8035h)
+--------S-148035-----------------------------
+INT 14 - ARTICOM - GET INTERNAL SEND/RECEIVE VECTOR
+ AX = 8035h
+Return: ES:BX -> address of current send/receive routine
+Note: this function returns the address of the routine which is called
+ inside A-REDIR.EXE each time a character is received or sent on the
+ active COM port.
+SeeAlso: AX=8000h,AX=8025h,INT 21/AH=35h
+--------S-1481-------------------------------
+INT 14 - COURIERS.COM - CHECK IF PORT BUSY
+ AH = 81h
+ AL = port number (1-4)
+Return: AH = status
+ 00h port available
+ 01h port exists but already in use
+ 02h port nonexistent
+Program: COURIERS is a TSR utility by PC Magazine
+SeeAlso: AH=83h,AH=8Dh
+--------S-1481-------------------------------
+INT 14 - COMM-DRV - EXTENDED INITIALIZATION
+ AH = 81h
+ BX:DI -> port control block (see #00367)
+ DX = port number
+Return: AH = line status register (see #00304)
+ error if bit 7 set
+ AL = modem status register (see #00305)
+Program: COMM-DRV is a universal serial communications driver by Willies'
+ Computer Software Company, which supports standard INT 14 and
+ FOSSIL calls as well as its own interfaces
+Note: AX=8001h should be called first to fill in the port control block
+SeeAlso: AH=00h,AX=8001h,AH=82h"COMM-DRV",AH=86h"COMM-DRV"
+
+Format of COMM-DRV port control block:
+Offset Type Description (Table 00367)
+ 00h WORD port IO address
+ 02h WORD port IRQ
+ 04h WORD baud rate
+ 06h WORD parity
+ 08h WORD data bits
+ 0Ah WORD stop bits
+ 0Ch WORD break status (0000h off)
+ 0Eh WORD flow control protocol
+ 10h BYTE input block
+ 11h BYTE output block
+ 12h WORD low threshold
+ 14h WORD high threshold
+ 16h WORD segment of buffer
+ 18h WORD offset of buffer
+ 1Ah WORD input buffer length
+ 1Ch WORD output buffer length
+ 1Eh BYTE auxiliary address
+ 1Fh BYTE spare
+ 20h 4 WORDs spares
+--------V-148100-----------------------------
+INT 14 - VIDEO FOSSIL - RETURN VFOSSIL INFORMATION
+ AX = 8100h
+ ES:DI -> buffer for VFOSSIL information (see #00368)
+Return: AX = 1954h if installed
+SeeAlso: AH=7Eh,AX=8101h
+
+Format of VFOSSIL information:
+Offset Size Description (Table 00368)
+ 00h WORD size of information in bytes, including this field
+ 02h WORD VFOSSIL major version
+ 04h WORD VFOSSIL revision level
+ 06h WORD highest VFOSSIL application function supported
+--------V-148101-----------------------------
+INT 14 - VIDEO FOSSIL - OPEN VFOSSIL
+ AX = 8101h
+ ES:DI -> buffer for application function table (see #00369)
+ CX = length of buffer in bytes
+Return: AX = 1954h if installed
+ BH = highest VFOSSIL application function supported
+Note: the number of initialized pointers in the application function table
+ will never exceed CX/4; if the buffer is large enough, BH+1 pointers
+ will be initialized
+SeeAlso: AX=8102h
+
+Format of VFOSSIL application function table:
+Offset Size Description (Table 00369)
+ 00h DWORD -> function to query current video mode (VioGetMode)(see #00374)
+ 04h DWORD -> function to set video mode (VioSetMode) (see #00375)
+ 08h DWORD -> function to query hardware config (VioGetConfig) (see #00376)
+ 0Ch DWORD -> function to write data in TTY mode (VioWrtTTY) (see #00377)
+ 10h DWORD -> function to get current ANSI state (VioGetANSI) (see #00378)
+ 14h DWORD -> function to set new ANSI state (VioSetANSI) (see #00379)
+ 18h DWORD -> function to get curr cursor position (VioGetCurPos)
+ (see #00380)
+ 1Ch DWORD -> function to set cursor position (VioSetCurPos) (see #00381)
+ 20h DWORD -> function to get cursor shape (VioGetCurType) (see #00382)
+ 24h DWORD -> function to set cursor shape (VioSetCurType) (see #00383)
+ 28h DWORD -> function to scroll screen up (VioScrollUp) (see #00384)
+ 2Ch DWORD -> function to scroll screen down (VioScrollDn) (see #00385)
+ 30h DWORD -> function to read cell string from screen (VioReadCellStr)
+ (see #00386)
+ 34h DWORD -> function to read char string from screen (VioReadCharStr)
+ (see #00387)
+ 38h DWORD -> function to write a cell string (VioWrtCellStr)
+ (see #00388)
+ 3Ch DWORD -> function to write char string, leaving attr (VioWrtCharStr)
+ (see #00389)
+ 40h DWORD -> function to write char string,const attr (VioWrtCharStrAttr)
+ (see #00390)
+ 44h DWORD -> function to replicate an attribute (VioWrtNAttr)
+ (see #00391)
+ 48h DWORD -> function to replicate a cell (VioWrtNCell)
+ (see #00392)
+ 4Ch DWORD -> function to replicate a character (VioWrtNChar)
+ (see #00393)
+
+Format of VFOSSIL video mode data structure:
+Offset Size Description (Table 00370)
+ 00h WORD length of structure including this field
+ 02h BYTE mode characteristics
+ bit 0: clear if MDA, set otherwise
+ bit 1: graphics mode
+ bit 2: color disabled (black-and-white)
+ 03h BYTE number of colors supported (1=2 colors, 4=16 colors, etc)
+ 04h WORD number of text columns
+ 06h WORD number of text rows
+ 08h WORD reserved
+ 0Ah WORD reserved
+ 0Ch DWORD reserved
+SeeAlso: #00374,#00375
+
+Format of VFOSSIL video configuration data:
+Offset Size Description (Table 00371)
+ 00h WORD structure length including this field
+ 02h WORD adapter type
+ 00h monochrome/printer
+ 01h CGA
+ 02h EGA
+ 03h VGA
+ 07h 8514/A
+ 04h WORD display type
+ 00h monochrome
+ 01h color
+ 02h enhanced color
+ 09h 8514
+ 06h DWORD adapter memory size
+SeeAlso: #00376
+
+Format of VFOSSIL cursor type record:
+Offset Size Description (Table 00372)
+ 00h WORD cursor start line
+ 02h WORD cursor end line
+ 04h WORD cursor width (always 01h)
+ 06h WORD cursor attribute (FFFFh = hidden)
+
+(Table 00373)
+Values for VFOSSIL error code:
+ 0000h successful
+ 0074h internal VIO failure
+ 0163h unsupported mode
+ 0166h invalid row value
+ 0167h invalid column value
+ 017Eh buffer too small
+ 01A5h invalid VIO parameter
+ 01B4h invalid VIO handle
+
+(Table 00374)
+Call VioGetMode with:
+ STACK: WORD VIO handle (must be 00h)
+ DWORD pointer to video mode data structure (see #00370)
+Return: AX = error code (00h, 74h, 17Eh, 1B4h) (see #00373)
+SeeAlso: #00375
+
+(Table 00375)
+Call VioSetMode with:
+ STACK: WORD VIO handle (must be 00h)
+ DWORD pointer to video mode data structure (see #00370)
+Return: AX = error code (00h, 74h, 163h, 17Eh, 1A5h, 1B4h) (see #00373)
+SeeAlso: #00374
+
+(Table 00376)
+Call VioGetConfig with:
+ STACK: WORD VIO handle (must be 00h)
+ DWORD pointer to video configuration data buffer (see #00371)
+Return: AX = error code (00h, 74h, 17Eh, 1B4h) (see #00373)
+
+(Table 00377)
+Call VioWrtTTY with:
+ STACK: WORD VIO handle (must be 00h)
+ WORD length of string
+ DWORD pointer to character string to be written to screen
+Return: AX = error code (00h, 74h, 1B4h) (see #00373)
+Notes: write wraps at end of line and terminates if it reaches end of screen
+ in ANSI mode, ANSI control sequences are interpreted, and this func is
+ not required to be reentrant; in non-ANSI mode, the function is
+ reentrant and may be called from within an MS-DOS function call
+
+(Table 00378)
+Call VioGetANSI with:
+ STACK: WORD VIO handle (must be 00h)
+ DWORD pointer to WORD which will be set to 00h if ANSI is off
+ or 01h if ANSI is on
+Return: AX = error code (00h, 74h, 1B4h) (see #00373)
+SeeAlso: #00379
+
+(Table 00379)
+Call VioSetANSI with:
+ STACK: WORD VIO handle (must be 00h)
+ DWORD pointer to WORD indicating new state of ANSI
+ 00h off, 01h on
+Return: AX = error code (00h, 74h, 1A4h, 1B4h) (see #00373)
+SeeAlso: #00378
+
+(Table 00380)
+Call VioGetCurPos with:
+ STACK: WORD VIO handle (must be 00h)
+ DWORD pointer to WORD to hold current cursor column (0-based)
+ DWORD pointer to WORD to hold current cursor row (0-based)
+Return: AX = error code (00h, 74h, 1B4h) (see #00373)
+SeeAlso: #00381
+
+(Table 00381)
+Call VioSetCurPos with:
+ STACK: WORD VIO handle (must be 00h)
+ WORD cursor column
+ WORD cursor row
+Return: AX = error code (00h, 74h, 166h, 167h, 1B4h) (see #00373)
+Note: if either coordinate is invalid, the cursor is not moved
+SeeAlso: #00380
+
+(Table 00382)
+Call VioGetCurType with:
+ STACK: WORD VIO handle (must be 00h)
+ DWORD pointer to cursor type record (see #00372)
+Return: AX = error code (00h, 74h, 1B4h) (see #00373)
+SeeAlso: #00383
+
+(Table 00383)
+Call VioSetCurType with:
+ STACK: WORD VIO handle (must be 00h)
+ DWORD pointer to cursor type record (see #00372)
+Return: AX = error code (00h, 74h, 1A4h, 1B4h) (see #00373)
+SeeAlso: #00384
+
+(Table 00384)
+Call VioScrollUp with:
+ STACK: WORD VIO handle (must be 00h)
+ DWORD pointer to char/attr cell for filling emptied rows
+ WORD number or rows to scroll (FFFFh = clear area)
+ WORD right column of scroll area
+ WORD bottom row of scroll area
+ WORD left column of scroll area
+ WORD top row of scroll area
+Return: AX = error code (00h, 74h, 166h, 167h, 1B4h) (see #00373)
+SeeAlso: #00385,INT 10/AH=06h
+
+(Table 00385)
+Call VioScrollDn with:
+ STACK: WORD VIO handle (must be 00h)
+ DWORD pointer to char/attr cell for filling emptied rows
+ WORD number or rows to scroll (FFFFh = clear area)
+ WORD right column of scroll area
+ WORD bottom row of scroll area
+ WORD left column of scroll area
+ WORD top row of scroll area
+Return: AX = error code (00h, 74h, 166h, 167h, 1B4h) (see #00373)
+SeeAlso: #00384,INT 10/AH=07h
+
+(Table 00386)
+Call VioReadCellStr with:
+ STACK: WORD VIO handle (must be 00h)
+ WORD column at which to start reading
+ WORD row at which to start reading
+ DWORD pointer to WORD containing length of buffer in bytes
+ on return, WORD contains number of bytes actually read
+ DWORD pointer to buffer for cell string
+Return: AX = error code (00h, 74h, 166h ,167h, 1B4h) (see #00373)
+
+(Table 00387)
+Call VioReadCharStr with:
+ STACK: WORD VIO handle (must be 00h)
+ WORD column at which to start reading
+ WORD row at which to start reading
+ DWORD pointer to WORD containing length of buffer in bytes
+ on return, WORD contains number of bytes actually read
+ DWORD pointer to buffer for character string
+Return: AX = error code (00h, 74h, 166h ,167h, 1B4h) (see #00373)
+
+(Table 00388)
+Call VioWrtCellStr with:
+ STACK: WORD VIO handle (must be 00h)
+ WORD column at which to start writing
+ WORD row at which to start writing
+ WORD length of cell string in bytes
+ DWORD pointer to cell string to write
+Return: AX = error code (00h, 74h, 166h, 167h, 1B4h) (see #00373)
+Note: write wraps at end of line and terminates if it reaches end of screen
+
+(Table 00389)
+Call VioWrtCharStr with:
+ STACK: WORD VIO handle (must be 00h)
+ WORD column at which to start writing
+ WORD row at which to start writing
+ WORD length of character string
+ DWORD pointer to character string to write
+Return: AX = error code (00h, 74h, 166h, 167h, 1B4h) (see #00373)
+Note: write wraps at end of line and terminates if it reaches end of screen
+
+(Table 00390)
+Call VioWrtCharStrAttr with:
+ STACK: WORD VIO handle (must be 00h)
+ DWORD pointer to attribute to be applied to each character
+ WORD column at which to start writing
+ WORD row at which to start writing
+ WORD length of character string
+ DWORD pointer to character string to write
+Return: AX = error code (00h, 74h, 166h, 167h, 1B4h) (see #00373)
+Note: write wraps at end of line and terminates if it reaches end of screen
+
+(Table 00391)
+Call VioWrtNAttr with:
+ STACK: WORD VIO handle (must be 00h)
+ WORD column at which to start writing
+ WORD row at which to start writing
+ WORD number of times to write attribute
+ DWORD pointer to display attribute to replicate
+Return: AX = error code (00h, 74h, 166h, 167h, 1B4h) (see #00373)
+Note: write wraps at end of line and terminates if it reaches end of screen
+
+(Table 00392)
+Call VioWrtNCell with:
+ STACK: WORD VIO handle (must be 00h)
+ WORD column at which to start writing
+ WORD row at which to start writing
+ WORD number of times to write cell
+ DWORD pointer to cell to replicate
+Return: AX = error code (00h, 74h, 166h, 167h, 1B4h) (see #00373)
+Note: write wraps at end of line and terminates if it reaches end of screen
+
+(Table 00393)
+Call VioWrtNChar with:
+ STACK: WORD VIO handle (must be 00h)
+ WORD column at which to start writing
+ WORD row at which to start writing
+ WORD number of times to write character
+ DWORD pointer to character to replicate
+Return: AX = error code (00h, 74h, 166h, 167h, 1B4h) (see #00373)
+Note: write wraps at end of line and terminates if it reaches end of screen
+--------V-148102-----------------------------
+INT 14 - VIDEO FOSSIL - CLOSE VFOSSIL
+ AX = 8102h
+Return: AX = 1954h
+Note: terminates all operations; after this call, the video FOSSIL may either
+ be removed from memory or reinitialized
+SeeAlso: AX=8101h,AX=8103h
+--------V-148103-----------------------------
+INT 14 - VIDEO FOSSIL - UNINSTALL
+ AX = 8103h
+Return: AX = 1954h
+Note: this is an extension to the VFOSSIL spec by Bob Hartman's VFOS_IBM
+--------K-1482-------------------------------
+INT 14 - KEYBOARD FOSSIL
+ AH = 82h
+SeeAlso: AH=7Eh
+--------S-1482-------------------------------
+INT 14 - COURIERS.COM - CONFIGURE PORT
+ AH = 82h
+ AL = port number (1-4)
+ BX = speed (bps)
+ CX = bit flags
+ bit 0: enable input flow control
+ bit 1: enable output flow control
+ bit 2: use X.PC protocol (not yet implemented)
+Return: nothing
+SeeAlso: AH=00h,AH=8Ch,INT 7A"X.PC"
+--------S-1482-------------------------------
+INT 14 - COMM-DRV v14.0 - PORT CLEANUP
+ AH = 82h
+ DX = port number
+Return: AH bit 7 set on error
+ AH bit 7 clear if successful
+Desc: reset the port to its state before the AH=81h initialization and unhook
+ any interrupts used by the port
+SeeAlso: AH=81h"COMM-DRV",AH=83h"COMM-DRV"
+----------1483-------------------------------
+INT 14 - SYSTEM FOSSIL
+ AH = 83h
+SeeAlso: AH=7Eh
+--------S-1483-------------------------------
+INT 14 - COURIERS.COM - START INPUT
+ AH = 83h
+ ES:BX -> circular input buffer
+ CX = length of buffer
+ (should be at least 128 bytes if input flow control enabled)
+Return: nothing
+SeeAlso: AH=18h,AH=87h,AH=8Dh,AH=A5h"BAPI"
+--------S-1483-------------------------------
+INT 14 - COMM-DRV v14.0 - FLUSH COMMUNICATION BUFFERS
+ AH = 83h
+ DX = port number
+ AL = subfunction
+ 00h flush input buffer
+ 01h flush output buffer
+ 02h flush both buffers
+Return: AH bit 7 set on error
+ AH bit 7 clear if successful
+SeeAlso: AH=81h"COMM-DRV",AH=84h"COMM-DRV"
+--------S-1484-------------------------------
+INT 14 - COURIERS.COM - READ CHARACTER
+ AH = 84h
+Return: ZF set if no characters available
+ ZF clear
+ AL = character
+ AH = modem status bits
+ bit 7: set on input buffer overflow
+SeeAlso: AH=02h,AH=86h,AH=89h
+--------S-1484-------------------------------
+INT 14 - COMM-DRV v14.0 - SEND PACKET
+ AH = 84h
+ CX = packet length in bytes
+ DX = port number
+ ES:DI -> packet to be sent
+Return: AH = line status (see #00304)
+ bit 7 set on error
+ AL destroyed
+SeeAlso: AH=83h"COMM-DRV",AH=85h"COMM-DRV",AH=86h"COMM-DRV"
+--------S-1485-------------------------------
+INT 14 - COURIERS.COM - FLUSH PENDING INPUT
+ AH = 85h
+Return: nothing
+SeeAlso: AH=0Ah,AH=88h"COURIERS"
+--------S-1485-------------------------------
+INT 14 - COMM-DRV v14.0 - RECEIVE PACKET
+ AH = 85h
+ CX = length of packet in bytes
+ DX = port number
+ ES:DI -> buffer for packet
+Return: AH = line status (see #00304)
+ bit 7 set on error
+ AL destroyed
+Note: this call requires that at least the requested number of bytes are
+ already present in the input buffer, and will fail if there are
+ fewer bytes available
+SeeAlso: AH=84h"COMM-DRV",AH=86h"COMM-DRV",AH=8Eh"COMM-DRV"
+--------S-1486-------------------------------
+INT 14 - COURIERS.COM - START OUTPUT
+ AH = 86h
+ ES:BX -> output buffer
+ CX = length of output buffer
+Return: nothing
+SeeAlso: AH=19h,AH=83h"COURIERS",AH=A4h"BAPI"
+--------S-1486-------------------------------
+INT 14 - COMM-DRV v14.0 - SET INPUT/OUTPUT TIMEOUTS
+ AH = 86h
+ BL = maximum clock ticks to wait before signalling error on input func
+ BH = maximum clock ticks to wait before signalling error on output
+ DX = port number
+ SI = input timeout in clock ticks if BL=FFh and BH=FFh
+ DI = output timeout in clock ticks if BL=FFh and BH=FFh
+Return: AH bit 7 set on error
+ AH bit 7 clear if successful
+Note: functions 02h, 85h, and 8Eh will wait for the input timeout before
+ returning an error when no data is available; functions 01h and 84h
+ will wait for the output timeout before returning an error if there
+ is no space to output the data
+SeeAlso: AH=01h,AH=02h,AH=84h"COMM-DRV",AH=85h"COMM-DRV",AH=8Eh"COMM-DRV"
+--------S-1487-------------------------------
+INT 14 - COURIERS.COM - OUTPUT STATUS
+ AH = 87h
+Return: AX = number of unsent characters
+SeeAlso: AH=88h"COURIERS"
+--------S-1487-------------------------------
+INT 14 - COMM-DRV v14.0 - TURN ON DTR
+ AH = 87h
+ DX = port number
+Return: AH bit 7 set on error
+ AH bit 7 clear if successful
+SeeAlso: AX=8000h"COMM-DRV",AH=88h"COMM-DRV",AH=89h"COMM-DRV"
+--------S-1488-------------------------------
+INT 14 - COURIERS.COM - ABORT OUTPUT
+ AH = 88h
+SeeAlso: AH=09h"FOSSIL",AH=85h"COURIERS"
+--------S-1488-------------------------------
+INT 14 - COMM-DRV v14.0 - TURN OFF DTR
+ AH = 88h
+ DX = port number
+Return: AH bit 7 set on error
+ AH bit 7 clear if successful
+Program: COMM-DRV is a universal serial communications driver by Willies'
+ Computer Software Company, which supports standard INT 14 and
+ FOSSIL calls as well as its own interfaces
+SeeAlso: AX=8000h"COMM-DRV",AH=87h"COMM-DRV",AH=8Ah"COMM-DRV"
+--------S-1489-------------------------------
+INT 14 - COURIERS.COM - SEND SINGLE CHARACTER
+ AH = 89h
+ CL = character to send
+Return: nothing
+SeeAlso: AH=01h,AH=84h"COURIERS"
+--------S-1489-------------------------------
+INT 14 - COMM-DRV v14.0 - TURN ON RTS
+ AH = 89h
+ DX = port number
+Return: AH bit 7 set on error
+ AH bit 7 clear if successful
+SeeAlso: AX=8000h"COMM-DRV",AH=87h"COMM-DRV",AH=8Ah"COMM-DRV"
+--------S-148A-------------------------------
+INT 14 - COURIERS.COM - SEND BREAK
+ AH = 8Ah
+Return: nothing
+SeeAlso: AH=89h"COURIERS",AH=FAh
+--------S-148A-------------------------------
+INT 14 - COMM-DRV v14.0 - TURN OFF RTS
+ AH = 8Ah
+ DX = port number
+Return: AH bit 7 set on error
+ AH bit 7 clear if successful
+SeeAlso: AX=8000h"COMM-DRV",AH=88h"COMM-DRV",AH=89h"COMM-DRV"
+--------S-148B-------------------------------
+INT 14 - COMM-DRV v14.0 - SET USER INTERRUPT ROUTINE
+ AH = 8Bh
+ CX = bitmask of interrupt to process
+ 00h = deinstall
+ BX:DI -> DWORD containing address of function to be called
+Return: AH bit 7 clear if successful
+ AH bit 7 set on error
+--------S-148C-------------------------------
+INT 14 - COURIERS.COM - SET SPEED
+ AH = 8Ch
+ BX = speed in bps
+Return: nothing
+SeeAlso: AH=00h,AH=82h"COURIERS"
+--------S-148C-------------------------------
+INT 14 - COMM-DRV v14.0 - READ UART REGISTER
+ AH = 8Ch
+ AL = register offset
+ DX = port number
+Return: AH bit 7 set on error
+ AH bit 7 clear if successful
+ AL = contents of UART register
+SeeAlso: AH=8Dh"COMM-DRV"
+--------S-148D-------------------------------
+INT 14 - COURIERS.COM - DECONFIGURE PORT
+ AH = 8Dh
+Return: nothing
+SeeAlso: AH=82h"COURIERS"
+--------S-148D-------------------------------
+INT 14 - COMM-DRV v14.0 - WRITE UART REGISTER
+ AH = 8Dh
+ AL = register offset
+ BL = new value for UART register
+ DX = port number
+Return: AH bit 7 set on error
+ AH bit 7 clear if successful
+SeeAlso: AH=8Ch"COMM-DRV"
+--------S-148E-------------------------------
+INT 14 - COMM-DRV v14.0 - READ PACKET NONDESTRUCTIVELY
+ AH = 8Eh
+ CX = length of packet in bytes
+ DX = port number
+ ES:DI -> buffer for packet
+Return: AH = line status (see #00304)
+ bit 7 set on error (see AX=8000h"COMM-DRV")
+ AL destroyed
+Program: COMM-DRV is a universal serial communications driver by Willies'
+ Computer Software Company, which supports standard INT 14 and
+ FOSSIL calls as well as its own interfaces
+Desc: retrieve a packet from the input buffer without removing it from the
+ buffer
+Note: this call requires that at least the requested number of bytes are
+ already present in the input buffer, and will fail if there are
+ fewer bytes available
+SeeAlso: AX=8000h"COMM-DRV",AH=84h"COMM-DRV",AH=85h"COMM-DRV",AH=86h"COMM-DRV"
+--------S-14A0-------------------------------
+INT 14 - 3com BAPI SERIAL I/O - CONNECT TO PORT
+ AH = A0h
+ ES:BX -> ASCIZ internet host name
+ CX = length of name
+Return: AH = return code (00h,04h-06h,08h,0Ah-0Ch) (see #00394)
+ CL = session ID
+Program: the Bridge Application Program Interface is a set of functions which
+ makes many of the details of LAN communications transparent
+Note: Novell TELAPI.EXE returns AH=09h (not supported) and CL=00h
+SeeAlso: AH=A1h"BAPI",AH=A2h"BAPI",AH=A5h"BAPI",AX=AF00h
+
+(Table 00394)
+Values for 3com BAPI return code:
+ 00h successful
+ 01h no characters written
+ 02h no characters read
+ 03h no such session
+ 04h clearinghouse name not found
+ 05h no response from host
+ 06h no more sessions available
+ 07h session aborted
+ 08h invalid clearinghouse name
+ 09h not supported
+ 0Ah internal (general) network error
+ 0Bh out of memory
+ 0Ch invalid IP address
+--------S-14A0--CXFFFF-----------------------
+INT 14 - Interconnections Inc. TES - INSTALLATION CHECK/STATUS REPORT
+ AH = A0h
+ CX = FFFFh
+Return: CF clear if successful
+ AX = 5445h ('TE')
+ CX <> FFFFh
+ DX = port number
+ CF set on error
+Program: TES is a network serial port emulation program
+SeeAlso: AH=A1h"TES"
+--------S-14A1-------------------------------
+INT 14 - 3com BAPI SERIAL I/O - DISCONNECT FROM PORT
+ AH = A1h
+ DH = session ID (00h for external session managment)
+Return: AH = return code (00h,03h,07h,0Ah,0Bh) (see #00394)
+ AL destroyed (Novell TELAPI.EXE)
+SeeAlso: AH=A0h"BAPI"
+--------S-14A1-------------------------------
+INT 14 - Interconnections Inc. TES - GET LIST OF SESSIONS WITH STATUS
+ AH = A1h
+Return: CX = number of active sessions
+ ES:SI -> status array (see #00395)
+SeeAlso: AH=A2h"TES",AH=A3h"TES"
+
+Format of Interconnections TES status array entry:
+Offset Size Description (Table 00395)
+ 00h BYTE status
+ 01h WORD offset of name
+--------S-14A2-------------------------------
+INT 14 - 3com BAPI SERIAL I/O - WRITE CHARACTER
+ AH = A2h
+ AL = character
+ DH = session ID (00h for external session managment)
+Return: AH = return code (00h,01h,03h,07h,0Ah,0Bh) (see #00394)
+SeeAlso: AH=A0h"BAPI",AH=A3h"BAPI",AH=A4h"BAPI"
+--------S-14A2-------------------------------
+INT 14 - Interconnections Inc. TES - GET LIST OF SERVER NAMES
+ AH = A2h
+Return: CX = number of servers
+ ES:SI -> array of offsets from ES for server names
+SeeAlso: AH=A1h"TES"
+--------S-14A3-------------------------------
+INT 14 - 3com BAPI SERIAL I/O - READ CHARACTER
+ AH = A3h
+ DH = session ID (00h for external session managment)
+Return: AH = return code (00h,02h,03h,07h,0Ah,0Bh) (see #00394)
+ AL = character read or 00h if none available
+SeeAlso: AH=A0h"BAPI",AH=A2h"BAPI",AH=A5h"BAPI",AH=A7h"BAPI"
+--------S-14A3-------------------------------
+INT 14 - Interconnections Inc. TES - START A NEW SESSION
+ AH = A3h
+ ES:SI -> ???
+Return: CF clear if successful
+ AX = 5445h ('TE')
+ CX <> FFFFh
+ DX = port number
+ CF set on error
+SeeAlso: AH=A1h"TES",AH=A4h"TES",AH=A6h"TES"
+--------S-14A4-------------------------------
+INT 14 - 3com BAPI SERIAL I/O - WRITE BLOCK
+ AH = A4h
+ CX = length of buffer in bytes
+ DH = session ID (00h for external session managment)
+ ES:BX -> buffer containing data
+Return: AH = return code (00h,01h,03h,07h,0Ah,0Bh) (see #00394)
+ CX = number of bytes actually sent
+SeeAlso: AH=19h,AH=86h,AH=A0h"BAPI",AH=A5h"BAPI"
+--------S-14A4-------------------------------
+INT 14 - Interconnections Inc. TES - HOLD CURRENTLY ACTIVE SESSION
+ AH = A4h
+ ???
+Return: ???
+SeeAlso: AH=A3h"TES",AH=A5h"TES"
+--------S-14A5-------------------------------
+INT 14 - 3com BAPI SERIAL I/O - READ BLOCK
+ AH = A5h
+ CX = length of buffer
+ DH = session ID (00h for external session managment)
+ ES:BX -> buffer for data
+Return: AH = return code (00h,02h,03h,07h,0Ah,0Bh) (see #00394)
+ CX = number of bytes actually read
+SeeAlso: AH=18h,AH=83h"COURIERS",AH=A0h"BAPI",AH=A3h"BAPI",AH=A4h"BAPI"
+SeeAlso: AH=A7h"BAPI",AX=FF02h
+--------S-14A5-------------------------------
+INT 14 - Interconnections Inc. TES - RESUME A SESSION
+ AH = A5h
+ AL = session number
+Return: ???
+SeeAlso: AH=A4h"TES",AH=A6h"TES"
+--------S-14A6-------------------------------
+INT 14 - 3com BAPI SERIAL I/O - SEND SHORT BREAK
+ AH = A6h
+ DH = session ID (00h for external session managment)
+Return: AH = return code (00h,03h,07h,0Ah,0Bh) (see #00394)
+Desc: generate a short break signal; if data delivery was turned off by the
+ break, wait for the host to turn it on again
+SeeAlso: AH=1Ah,AH=8Ah,AH=FAh,AH=A0h"BAPI"
+--------S-14A6-------------------------------
+INT 14 - Interconnections Inc. TES - DROP A SESSION
+ AH = A6h
+ AL = session number
+Return: AH = status
+ 00h successful
+ else error
+SeeAlso: AH=A3h"TES",AH=A5h"TES"
+--------S-14A7-------------------------------
+INT 14 - 3com BAPI SERIAL I/O - READ STATUS
+ AH = A7h
+ DH = session ID (00h for external session managment)
+Return: AH = return code (00h,03h,07h,0Ah,0Bh) (see #00394)
+ CX = number of bytes available for reading
+Note: Novell TELAPI.EXE v4.01 always returns either 0 or 1 bytes available
+SeeAlso: AH=A5h"BAPI"
+--------S-14A7-------------------------------
+INT 14 - Interconnections Inc. TES - SWITCH TO NEXT ACTIVE SESSION
+ AH = A7h
+ ???
+Return: ???
+SeeAlso: AH=A3h"TES",AH=A5h"TES"
+--------S-14A8-------------------------------
+INT 14 - Interconnections Inc. TES - SEND STRING TO COMMAND INTERPRETER
+ AH = A8h
+ AL = 00h no visible response
+ ES:SI -> ASCIZ command
+Return: ???
+--------N-14A8-------------------------------
+INT 14 - Novell TelAPI v4.01 - CONNECTION INFORMATION???
+ AH = A8h
+ DH = session ID???
+ CH = subfunction
+ 02h ???
+ 0Dh ???
+ 0Fh ???
+ 10h ???
+ 11h ???
+ 28h ???
+ else
+ Return: AH = 09h (not supported)
+Return: AH = return code (see #00394)
+ 00h successful
+ CL = ??? (0/1/8) (subfunctions 02h,0Dh,0Fh,10h)
+ CL = ??? (7Fh/FFh) (subfunction 28h)
+ CX = ??? (subfunction 11h)
+SeeAlso: AH=A9h"TelAPI"
+--------N-14A9-------------------------------
+INT 14 - Novell TelAPI v4.01 - CONNECTION CONTROL???
+ AH = A9h
+ DH = session ID???
+ CH = subfunction
+ 02h ???
+ 0Dh ???
+ 0Fh ???
+ 10h ???
+ 11h ???
+ 28h ???
+ else
+ Return: AH = 09h (not supported)
+ ???
+Return: AH = return code (see #00394)
+ ???
+SeeAlso: AH=A8h"TelAPI",AH=E4h,INT 6B/AX=0600h
+--------V-14AA01-----------------------------
+INT 14 - DimVGA v2.0+ - INSTALLATION CHECK
+ AX = AA01h
+Return: AX = FFFFh if installed, unchanged
+ BX = version (v1.5+ only), BH = major, BL = minor (v1.5 = 0105h)
+ CX = resident segment (v3.1+)
+Program: DimVGA is a public domain screen saver by Menno Pieters
+SeeAlso: AX=AA02h,AX=AA03h,AX=AA06h,INT 11/AX=0225h/BX=6900h,INT 12"KEYBUI"
+SeeAlso: INT 2D/AL=10h"Burnout Plus",INT 2F/AX=6400h,INT 2F/AH=93h
+SeeAlso: INT 2F/AX=C000h"VGAsave",INT 2F/AX=C000h"AD-DOS",INT 2F/AX=C050h
+SeeAlso: INT 2F/AX=E300h
+Index: screen saver;DimVGA
+--------V-14AA02-----------------------------
+INT 14 - DimVGA v2.0+ - SET TIME-OUT (DIMMING/BLANKING) PERIOD
+ AX = AA02h
+ BX = number of clock ticks
+Return: AX = FFFFh
+Note: on screen modes with 256 or less colors DimVGA will dim the screen,
+ when more than 256 colors can be used DimVGA will blank the screen.
+SeeAlso: AX=AA01h,AX=AA03h,AX=AA04h,AX=AA06h
+Index: screen saver;DimVGA
+--------V-14AA03-----------------------------
+INT 14 - DimVGA v2.0+ - SET DIMMING FACTOR
+ AX = AA03h
+ BX = percentage remaining visible (1-99)
+Return: AX = FFFFh
+SeeAlso: AX=AA02h,AX=AA05h,AX=AA06h
+Index: screen saver;DimVGA
+--------V-14AA04-----------------------------
+INT 14 - DimVGA v2.0+ - GET TIME-OUT PERIOD
+ AX = AA04h
+Return: AX = FFFFh
+ BX = current time-out in clock ticks
+SeeAlso: AX=AA02h,AX=AA05h,AX=AA0Ah
+Index: screen saver;DimVGA
+--------V-14AA05-----------------------------
+INT 14 - DimVGA v2.0+ - GET DIMMING FACTOR
+ AX = AA05h
+Return: AX = FFFFh
+ BX = current dimming factor
+SeeAlso: AX=AA03h,AX=AA04h,AX=AA0Ah
+Index: screen saver;DimVGA
+--------V-14AA06-----------------------------
+INT 14 - DimVGA v2.0+ - DISABLE
+ AX = AA06h
+Return: AX = FFFFh
+SeeAlso: AX=AA01h,AX=AA07h,AX=AA0Ah
+Index: screen saver;DimVGA
+--------V-14AA07-----------------------------
+INT 14 - DimVGA v2.0+ - ENABLE
+ AX = AA07h
+Return: AX = FFFFh
+SeeAlso: AX=AA01h,AX=AA06h,AX=AA0Ah
+Index: screen saver;DimVGA
+--------V-14AA08-----------------------------
+INT 14 - DimVGA v2.0+ - DIM SCREEN 'MANUALLY'
+ AX = AA08h
+Return: AX = FFFFh
+Note: this function will dim the screen immediately, even if DimVGA is
+ currently disabled
+SeeAlso: AX=AA01h,AX=AA02h,AX=AA09h
+Index: screen saver;DimVGA
+--------V-14AA09-----------------------------
+INT 14 - DimVGA v2.0+ - UNDIM SCREEN 'MANUALLY'
+ AX = AA09h
+Return: AX = FFFFh
+Note: this function will undim the screen immediately, even if DimVGA is
+ currently disabled
+SeeAlso: AX=AA01h,AX=AA08h
+Index: screen saver;DimVGA
+--------V-14AA0A-----------------------------
+INT 14 - DimVGA v2.0+ - CHECK WHETHER ENABLED
+ AX = AA0Ah
+Return: AX = FFFFh
+ BX = current state (0000h disabled, 0001h enabled)
+SeeAlso: AX=AA01h,AX=AA06h,AX=AA07h
+Index: screen saver;DimVGA
+--------V-14AA0B-----------------------------
+INT 14 - DimVGA v2.1+ - SET HOTKEY
+ AX = AA0Bh
+ BH = shift state (see #00396)
+ BL = keyboard scancode
+Return: AX = FFFFh
+SeeAlso: AX=AA01h,AX=AA0Ch
+Index: screen saver;DimVGA
+
+Bitfields for DimVGA hotkey shift state:
+Bit(s) Description (Table 00396)
+ 7-4 unused
+ 3 Alt key pressed
+ 2 Ctrl key pressed
+ 1 Left shift key pressed
+ 0 Right shift key pressed
+--------V-14AA0C-----------------------------
+INT 14 - DimVGA v2.1+ - GET HOTKEY
+ AX = AA0Ch
+Return: AX = FFFFh
+ BH = shift state (see #00396)
+ BL = keyboard scancode
+SeeAlso: AX=AA01h,AX=AA0Bh
+Index: screen saver;DimVGA
+--------V-14AA0D-----------------------------
+INT 14 - DimVGA v3.0+ - SET MOUSE CHECK STATUS
+ AX = AA0Dh
+ BX = new mouse check status
+ 0000h mouse checking off
+ 0001h mouse checking on
+Return: AX = FFFFh
+Note: before switching mouse checking on, a mouse driver should be
+ found in memory. If no mouse driver is found, mouse checking
+ should be switched off (resident DimVGA does not check by itself).
+SeeAlso: AX=AA01h,AX=AA0Eh
+Index: screen saver;DimVGA
+--------V-14AA0E-----------------------------
+INT 14 - DimVGA v3.0+ - GET MOUSE CHECK STATUS
+ AX = AA0Eh
+Return: BX = mouse check status (0000h disabled, 0001h enabled)
+SeeAlso: AX=AA01h,AX=AA0Dh
+Index: screen saver;DimVGA
+--------V-14AA0F-----------------------------
+INT 14 - DimVGA v3.4 - SET LOCKING STATUS
+ AX = AA0Fh
+ BX = locking status
+ 0000h disabled
+ 0001h enabled
+Return: AX = FFFFh
+SeeAlso: AX=AA01h,AX=AA0Dh,AX=AA10h
+Index: screen saver;DimVGA
+--------V-14AA10-----------------------------
+INT 14 - DimVGA v3.4 - GET MOUSE CHECK STATUS
+ AX = AA10h
+Return: BX = locking status (0000h disabled, 0001h enabled)
+SeeAlso: AX=AA01h,AX=AA0Dh,AX=AA0Fh
+Index: screen saver;DimVGA
+----------14AD-------------------------------
+INT 14 - IBM SurePath BIOS - Officially "Private" Function
+ AH = ADh
+SeeAlso: AH=AEh"IBM",AH=AFh"IBM"
+----------14AE-------------------------------
+INT 14 - IBM SurePath BIOS - Officially "Private" Function
+ AH = AEh
+SeeAlso: AH=ADh"IBM",AH=AFh"IBM"
+----------14AF-------------------------------
+INT 14 - IBM SurePath BIOS - Officially "Private" Function
+ AH = AFh
+SeeAlso: AH=ADh"IBM",AH=AEh"IBM"
+--------S-14AF00BXAAAA-----------------------
+INT 14 - 3com BAPI SERIAL I/O - INSTALLATION CHECK
+ AX = AF00h
+ BX = AAAAh
+Return: AX = AF01h if installed
+ BH = protocol type (if BX=AAAAh on entry)
+ 01h NetManage TCP/IP
+ BL = version for protocol type (if BX=AAAAh on entry)
+Note: early versions of the BAPI and the ROM BIOS simply destroy AX; this
+ behavior is used to determine whether the newer functions (AH=B0h,
+ AH=B1h,etc) are available
+SeeAlso: AH=A0h"BAPI"
+--------S-14B0-------------------------------
+INT 14 - 3com BAPI SERIAL I/O - EN/DISABLE "ENTER COMMAND MODE" (ECM) CHARACTER
+ AH = B0h
+ AL = new state (00h disabled, 01h enabled)
+Return: AH = return code (00h,07h,0Ah) (see #00394)
+Note: disabling the ECM character allows applications to send data which
+ includes the ECM character
+SeeAlso: AX=AF00h"BAPI",AH=B1h,AH=B2h
+--------S-14B1-------------------------------
+INT 14 - 3com BAPI SERIAL I/O - ENTER COMMAND MODE
+ AH = B1h
+Return: AH = return code (00h,07h,0Ah) (see #00394)
+Desc: provide a means for the application or terminal emulator to perform
+ the same action normally caused by the ECM character
+SeeAlso: AH=B0h,AH=B2h
+--------S-14B2-------------------------------
+INT 14 - 3com BAPI SERIAL I/O - GET ECM WATCH STATE
+ AH = B2h
+Return: AH = return code (00h,07h,0Ah) (see #00394)
+ AL = watch flag (00h disabled, 01h enabled)
+Desc: determine whether the ECM character is enabled
+SeeAlso: AH=B0h,AH=B1h
+--------S-14B3-------------------------------
+INT 14 - 3com BAPI SERIAL I/O - GET/SET CONFIGURATION INFO
+ AH = B3h
+ AL = direction (00h get, 01h set)
+ DH = session ID (00h for external session managment)
+ DL = configuration item (00h = end-of-line mapping)
+ CX = new configuration item value (if AL=01h)
+ ---if DL=00h---
+ CH = application EOL type (app to Telnet client)
+ 01h application will send lone CR
+ 02h application will send CR-? pair
+ CL = driver EOL type (Telnet client to Telnet server)
+ 01h driver should send CR-NUL pair
+ 02h driver should send CR-LF pair
+Return: AH = return code (00h,03h,09h-0Bh) (see #00394)
+ ---if AL=00h---
+ CX = configuration item value (above)
+SeeAlso: AH=B2h
+--------N-14E0-------------------------------
+INT 14 - TelAPI - "telopen" - CREATE TELNET CONNECTION (BLOCKING)
+ AH = E0h
+ BX = port number to connect with (default 0017h used if <= 0)
+ CX:DX = Internet address of remote host
+ DS:DI -> 2-byte remote host (session) identifier
+ ES:SI -> 1700-byte buffer for Telnet state record
+ 0000h:0000h to use TelAPI internally-allocated space
+Return: AX = status (0000h-0009h,FED3h,FF37h,FFBDh,FFC0h,FFCDh) (see #00397)
+ ES:SI buffer filled with state record
+ ES:SI -> internally-allocated state record in some versions
+Note: the remote host identifier may be used to refer to this connection
+SeeAlso: AH=E1h,AH=ECh,AX=FF00h
+
+(Table 00397)
+Values for TelAPI status:
+ 0000h-7FFFh successful (session number)
+ FED3h (-301) no session allocated, or out of TelAPI data space
+ FF37h (-201) all sessions in use
+ FFBDh (-67) unknown hostname
+ FFC0h (-64) host not functioning
+ FFC3h (-61) connection attempt refused
+ FFC4h (-60) connection attempt timed out
+ FFC8h (-56) socket already connected
+ FFCDh (-51) network is unreachable
+ FFDDh (-35) operation would block
+--------S-14E000-----------------------------
+INT 14 - MX5 Extended FOSSIL - GET MNP STATUS BLOCK
+ AX = E000h
+ DX = port number (0-3)
+Return: ES:BX -> status block (see #00398)
+Program: MX5 is a FOSSIL driver by MagicSoft which emulates MNP Level 5, and
+ ships with the METZ terminal program as MTEMNP.DRV (a TSR despite
+ the .DRV extension)
+SeeAlso: AX=E006h
+
+Format of MX5 Extended FOSSIL status block:
+Offset Size Description (Table 00398)
+ 00h BYTE flag: active (00h no, 01h yes)
+ 01h BYTE MNP level (2,4,5)
+ 02h BYTE series ID from remote MNP
+ 03h DWORD total packets transmitted
+ 07h DWORD duplicate packets transmitted
+ 0Bh DWORD maximum speed
+ 0Fh DWORD total packets received
+ 13h DWORD duplicate packets received
+ 17h DWORD maximum speed
+--------S-14E001-----------------------------
+INT 14 - MX5 Extended FOSSIL - GET/SET MNP LEVEL
+ AX = E001h
+ BH = function
+ 00h get MNP level
+ 01h set MNP level
+ BL = new level (00h none, 02h/04h/05h MNP level N)
+ DX = port number (0-3)
+Return: BL = MNP level
+SeeAlso: AX=E002h,AX=E003h,AX=E004h,AX=E006h
+--------S-14E002-----------------------------
+INT 14 - MX5 Extended FOSSIL - GET/SET MNP ANSWER/ORIGINATE MODE
+ AX = E002h
+ BH = function
+ 00h get answer/originate mode
+ 01h set mode
+ BL = new mode (00h originate [default], 01h answer)
+ DX = port number (0-3)
+Return: BL = answer/originate mode
+SeeAlso: AX=E001h,AX=E003h,AX=E006h
+--------S-14E003-----------------------------
+INT 14 - MX5 Extended FOSSIL - GET/SET MNP WAIT TICKS
+ AX = E003h
+ BH = function
+ 00h get wait ticks
+ 01h set wait ticks
+ BL = MNP wait ticks (default 0Eh)
+ DX = port number (0-3)
+Return: BL = wait ticks
+SeeAlso: AX=E001h,AX=E002h,AX=E006h
+--------S-14E004-----------------------------
+INT 14 - MX5 Extended FOSSIL - GET/SET MNP CONNECT SOUND LEVEL
+ AX = E004h
+ BH = function
+ 00h get sound level
+ 01h set sound level
+ BL = new sound level (00h off, 01h on [default])
+ DX = port number
+Return: BL = sound state
+Desc: specify whether MX5 should generate beeps after an MNP connection
+ (three high beeps if successful, high then low on connection failure)
+SeeAlso: AX=E002h,AX=E006h
+--------S-14E005-----------------------------
+INT 14 - MX5 Extended FOSSIL - UNINSTALL
+ AX = E005h
+Return: BX = segment of MX5's memory block or 0000h on failure
+Note: caller must free the returned memory block to complete the uninstall
+SeeAlso: AX=E006h
+--------S-14E006BX0000-----------------------
+INT 14 - MX5 Extended FOSSIL - INSTALLATION CHECK
+ AX = E006h
+ BX = 0000h
+Return: BX = 4D58h ('MX') if installed
+ AH = major version
+ AL = minor version
+SeeAlso: AX=E000h,AX=E001h,AX=E005h,AX=E007h
+--------S-14E007-----------------------------
+INT 14 - MX5 Extended FOSSIL - WAIT SPECIFIED NUMBER OF TICKS
+ AX = E007h
+ CX = number of ticks to wait
+Return: nothing
+SeeAlso: AX=E006h
+--------N-14E1-------------------------------
+INT 14 - TelAPI - "telclose" - TERMINATE TELNET CONNECTION
+ AH = E1h
+ BX = connection ID
+Return: AX = status (0000h,FFF7h,maybe others) (see #00397)
+Note: flushes and releases all buffers and data space used by the connection
+SeeAlso: AH=E0h,AH=E6h,AX=FF00h
+--------N-14E2-------------------------------
+INT 14 - TelAPI - "telread" - BUFFERED READ
+ AH = E2h
+ BX = connection ID (see AH=E0h"TelAPI")
+ CX = length of buffer in bytes
+ ES:SI -> buffer for data
+Return: AX > 0000h number of characters actually read
+ AX = 0000h host has closed connection
+ AX < 0000h error code (see #00397)
+Note: translates CRLF into local EOL if the connection is in ASCII mode,
+ negotiates various Telnet options, and immediately executes several
+ different Telnet action commands
+SeeAlso: AH=07h"TelAPI",AH=E3h,AH=E6h,AX=FF00h,INT 6B/AH=01h
+--------N-14E3-------------------------------
+INT 14 - TelAPI - "telwrite" - BUFFERED WRITE
+ AH = E3h
+ BX = connection ID
+ CX = length of buffer in bytes
+ ES:SI -> buffer containing data
+Return: AX > 0000h number of characters actually written
+ AX < 0000h error code (see #00397)
+Note: translates local EOL into CRLF if the connection is in ASCII mode,
+ sends the appropriate Telnet commands for the characters selected
+ for IP, AYT, AO, EC, EL, and Break
+SeeAlso: AH=06h"TelAPI",AH=E2h,AH=E6h,AX=FF00h,INT 6B/AH=00h
+--------N-14E4-------------------------------
+INT 14 - TelAPI - "telioctl" - CONNECTION CONTROL
+ AH = E4h
+ BX = connection ID (see AH=E0h"TelAPI")
+ CX = Telnet command/option identifier (see #00400)
+ ES:SI -> buffer containing command/option argument (see #00399)
+Return: AX = status (0000h, etc.) (see #00397)
+Desc: start filter control, initiate Telnet option negotiation, or get filter
+ control status
+SeeAlso: AH=A9h,AH=E6h,AX=FF00h,INT 6B/AX=0600h
+
+Format of TelAPI Telnet command/option argument:
+Offset Size Description (Table 00399)
+ 00h 5 WORD numeric arguments
+ 0Ah DWORD -> ASCIZ string
+SeeAlso: #00400
+
+(Table 00400)
+Values for TelAPI Telnet command/option identifier:
+ 01h ASCII args: none
+ 02h BINARY args: none
+ 03h LOCALECHO args: none client echos data
+ 04h REMOTEECHO args: none server echos data
+ 05h SGA args: none Suppress Go-Ahead signal
+ 07h CHARMODE args: none no line-buffering
+ 08h LINEMODE args: -> erase-line ch perform line-buffering
+ 09h RECVEOL args: EOL type
+ 0Ah SENDEOL args: EOL type
+ 0Bh EOR args: none enable end-of-record sequence
+ 0Dh BREAK args: -> break char
+ 0Eh VERBOSE args: verbosity display Telnet negotiations?
+ 0Fh AYT args: -> AYT escape ch
+ 10h AO args: -> AO escape char
+ 11h IP args: -> IP escape char
+ 12h EC args: -> escape char
+ 13h EL args: -> escape char
+ 14h STATUS args: type; returns data in structure
+ 18h TERMTYPE args: -> terminal type
+ 19h ATTACHPORT args: port number ; returns session number
+ 1Bh TRANSMIT_EOR args: EOR enabled append EOR to every telwrite?
+SeeAlso: #00399
+--------N-14E5-------------------------------
+INT 14 - TelAPI - "telreset" - RESET ALL CONNECTIONS
+ AH = E5h
+Return: AX = status (0000h,other) (see also #00397)
+ FFFFh unable to reset
+Desc: close all sessions and reset TelAPI to defaults
+SeeAlso: AH=E1h,AH=E6h,AX=FF00h
+--------N-14E6-------------------------------
+INT 14 - TelAPI - "telunload" - UNINSTALL
+ AH = E6h
+Return: AX = status
+ 0000h successful
+ FFFFh unable to uninstall
+Notes: TelAPI also supports the NASI/NACS and NCSI APIs on INT 6B
+ this function invokes AH=E5h internally
+SeeAlso: AH=E5h,AX=FF00h,INT 6B/AH=00h,INT 6B/AH=10h
+--------N-14E7-------------------------------
+INT 14 - TelAPI - "tellist" - GET TELNET SESSION LIST
+ AH = E7h
+ ES:SI -> 10-word buffer for session list
+Return: AX = 0000h (successful)
+ ES:SI buffer filled
+Desc: determine, for each of the ten allowable sessions, whether the session
+ is currently available
+Note: each word in the buffer is filled with either 0000h to indicate that
+ the corresponding sesion is unavailable, or 0001h if available
+SeeAlso: AH=E0h,AH=E5h,AX=FF00h
+--------N-14E8-------------------------------
+INT 14 - TelAPI - "telattach" - ATTACH COM PORT TO/FROM TELNET SESSION
+ AH = E8h
+ BX = connection ID (see AH=E0h"TelAPI")
+ CX = serial port number (0000h-0003h = COM1-COM4)
+Return: AX = status
+ 0000h successful
+ FFFFh failed
+SeeAlso: AH=E0h,AH=E9h,AX=FF00h
+--------N-14E9-------------------------------
+INT 14 - TelAPI - "telportosn" - GET SESSION NUMBER FOR COM PORT
+ AH = E9h
+ DX = serial port number (0000h-0003h = COM1-COM4)
+Return: AX >= 0000h session number
+ AX < 0000h error code (see #00397)
+SeeAlso: AH=E0h,AH=E8h,AH=EAh,AX=FF00h
+--------N-14EA-------------------------------
+INT 14 - TelAPI - "telstatus" - GET TELNET CONNECTION STATUS INFORMATION
+ AH = EAh
+ BX = connection ID (see AH=E0h"TelAPI")
+ ES:SI -> buffer for status info (see #00401)
+Return: AX = status (0000h,FFFFh,etc.)
+SeeAlso: AH=E9h,AH=EBh,AX=FF00h
+
+Format of TelAPI Telnet connection status information:
+Offset Size Description (Table 00401)
+ 00h 4 BYTEs remote host IP address
+ 04h 20 BYTEs reserved
+ 18h WORD local port number
+ 1Ah BYTE connection mode (00h = ASCII, 01h = Binary)
+ 1Bh BYTE echo flag (00h local, 01h remote)
+ 1Ch BYTE SGA flag (00h will, 01h won't)
+ 1Dh BYTE EOR negotation flag (00h do negotiate, 01h don't)
+ 1Eh BYTE buffering (00h line mode, 01h character mode)
+ 1Fh BYTE reserved
+ 20h BYTE verbose flag (00h no, 01h verbose mode)
+ 21h BYTE received EOL (00h no xlat, 01h CR, 02h LF, 03h CRLF)
+ 22h BYTE sent EOL (00h no translation, 01h CR, 02h LF)
+ 23h BYTE break character
+ 24h BYTE IP escape character
+ 25h BYTE AO escape character
+ 26h BYTE AYT escape character
+ 27h BYTE EC escape character
+ 28h BYTE EL escape character
+ 29h 41 BYTEs ASCIZ Telnet-negotiated terminal type
+ 52h 9 BYTEs session ID
+SeeAlso: #00402
+--------N-14EB-------------------------------
+INT 14 - TelAPI - "telname" - GET AVAILABLE/INUSE STATUS FOR ALL SESSIONS
+ AH = EBh
+ ES:SI -> buffer for session statuses (see #00402)
+Return: ES:SI buffer filled
+SeeAlso: AH=E9h,AH=EAh,AX=FF00h
+
+Format of TelAPI session status information [array]:
+Offset Size Description (Table 00402)
+ 00h BYTE session state (00h available, 01h connected)
+ 01h 9 BYTEs session ID if connected
+ 0Ah WORD attached COM port if connected, FFFFh if not
+SeeAlso: #00401
+--------N-14EC-------------------------------
+INT 14 - TelAPI - "telnblkopen" - CREATE TELNET CONNECTION (NON-BLOCKING)
+ AH = ECh
+ BX = port number to connect with (default 0017h used if <= 0)
+ CX:DX = Internet address of remote host
+ DS:DI -> 2-byte remote host (connection) identifier
+ ES:SI -> 1700-byte buffer for Telnet state record
+ 0000h:0000h to use TelAPI internally-allocated space
+Return: AX = status (0000h-0009h,FED3h,FF37h,FFBDh,FFC0h,FFCDh) (see #00397)
+ ES:SI buffer filled with state record
+ ES:SI -> internally-allocated state record in some versions
+Notes: the remote host identifier may be used to refer to this connection
+ this function returns immediately; use AH=EDh to check whether the
+ connection has been established yet
+ this function is not supported by the Microdyne TelAPI v3.7
+SeeAlso: AH=E0h"TelAPI",AH=EDh,AX=FF00h
+--------N-14ED-------------------------------
+INT 14 - TelAPI - "telpoll" - POLL TELNET SESSION FOR CONNECTION COMPLETION
+ AH = EDh
+ BX = connection ID (see AH=ECh)
+Return: AX = status (0000h,0001h,FFFFh,etc.) (see also #00397)
+ 0000h session now connected
+ 0001h connection still in progress
+Note: this function is not supported by the Microdyne TelAPI v3.7
+SeeAlso: AH=EDh,AX=FF00h
+--------a-14F0F0-----------------------------
+INT 14 - ASAP v1.0 - ???
+ AX = F0F0h
+ DX = ???
+ ???
+Return: ???
+Program: ASAP (Automatic Screen Access Program) is a shareware screen reader
+ by MicroTalk
+SeeAlso: AX=F0F1h
+--------a-14F0F1DX0000-----------------------
+INT 14 - ASAP v1.0 - INSTALLATION CHECK
+ AX = F0F1h
+ DX = 0000h
+Return: DX = segment of resident code
+ 0000h if not installed
+Program: ASAP (Automatic Screen Access Program) is a shareware screen reader
+ by MicroTalk
+SeeAlso: AX=F0F0h,INT 10/AX=3800h
+--------S-14F4FF-----------------------------
+INT 14 - IBM/Yale EBIOS SERIAL I/O - INSTALLATION CHECK
+ AX = F4FFh
+ DX = port (00h-03h)
+Return: CF clear if present
+ AX = 0000h
+ CF set if not present
+ AX <> 0000h
+SeeAlso: AH=36h"ComShare",AH=F9h,AH=FCh
+--------S-14F9-------------------------------
+INT 14 - IBM/Yale EBIOS SERIAL I/O - REGAIN CONTROL
+ AH = F9h
+ DX = port (00h-03h)
+Return: nothing
+SeeAlso: AX=F4FFh
+--------S-14FA-------------------------------
+INT 14 - IBM/Yale EBIOS SERIAL I/O - SEND BREAK
+ AH = FAh
+ DX = port (00h-03h)
+Return: nothing
+SeeAlso: AH=07h"MBBIOS",AH=1Ah,AH=8Ah
+--------S-14FB-------------------------------
+INT 14 - IBM/Yale EBIOS SERIAL I/O - SET OUTGOING MODEM SIGNALS
+ AH = FBh
+ AL = modem control register (see #00334 at AH=05h"SERIAL")
+ DX = port (00h-03h)
+Return: nothing
+SeeAlso: AH=05h"SERIAL"
+--------S-14FC-------------------------------
+INT 14 - IBM/Yale EBIOS SERIAL I/O - READ CHARACTER, NO WAIT
+ AH = FCh
+ DX = port (00h-03h)
+Return: AH = RS232 status bits (see #00304 at AH=03h)
+ AL = character
+SeeAlso: AH=02h,AH=0Ch,AX=FF02h
+--------S-14FD02-----------------------------
+INT 14 - IBM/Yale EBIOS SERIAL I/O - READ STATUS
+ AX = FD02h
+Return: CX = number of characters available
+--------N-14FF00-----------------------------
+INT 14 - TelAPI - "telcheck" - INSTALLATION CHECK
+ AX = FF00h
+Return: AX = 00FFh if installed
+ BX = version number * 100 (decimal)
+SeeAlso: AH=E6h,AX=F4FFh
+--------S-14FF01-----------------------------
+INT 14 - IBM/Yale EBIOS SERIAL I/O - SET SEND BUFFER
+ AX = FF01h
+ CX = length of buffer (0000h to cancel buffer assignment)
+ DX = port (00h-03h)
+ ES:BX -> send buffer
+Return: nothing
+SeeAlso: AH=18h,AH=83h"COURIERS",AH=A5h"BAPI",AH=FCh,AX=FF02h
+--------S-14FF02-----------------------------
+INT 14 - IBM/Yale EBIOS SERIAL I/O - SET RECEIVE BUFFER
+ AX = FF02h
+ CX = length of buffer (0000h to cancel buffer assignment)
+ DX = port (00h-03h)
+ ES:BX -> receive buffer
+Return: nothing
+SeeAlso: AH=18h,AH=83h"COURIERS",AH=A5h"BAPI",AH=FCh,AX=FF01h
+--------S-14FFF8-----------------------------
+INT 14 - COMM-DRV v14.0 - SET BAUD RATE DIVISOR
+ AX = FFF8h
+ BX = card type (sub-device number)
+ CX = new baudrate divisor
+ DX = index to baud rate
+Return: AH bit 7 set on error
+ AH bit 7 clear if successful
+Program: COMM-DRV is a universal serial communications driver by Willies'
+ Computer Software Company, which supports standard INT 14 and
+ FOSSIL calls as well as its own interfaces
+SeeAlso: AX=8000h"COMM-DRV"
+--------S-14FFFB-----------------------------
+INT 14 - COMM-DRV v14.0 - GET HIGHEST ALLOWED PORT NUMBER
+ AX = FFFBh
+ DX = port number
+Return: AH bit 7 set on error
+ AH bit 7 clear if successful
+ BX = highest port number
+--------S-14FFFC-----------------------------
+INT 14 - COMM-DRV v14.0 - GET INT 14 FLAGS
+ AX = FFFCh
+ DX = port number
+Return: AH bit 7 set on error
+ AH bit 7 clear if successful
+ BX = flags (see #00403)
+SeeAlso: AX=FFFDh
+
+Bitfields for INT 14h flags:
+Bit(s) Description (Table 00403)
+ 0 port active for INT 14h
+ 1 interface behaving like a FOSSIL driver
+--------S-14FFFD-----------------------------
+INT 14 - COMM-DRV v14.0 - SET INT 14 FLAGS
+ AX = FFFDh
+ BX = flags (see #00403)
+ DX = port number
+Return: AH bit 7 set on error
+ AH bit 7 clear if successful
+SeeAlso: AX=FFFCh
+--------S-14FFFE-----------------------------
+INT 14 - COMM-DRV v14.0 - RESTORE INT 14 VECTOR TO ORIGINAL
+ AX = FFFEh
+Return: AH bit 7 set on error
+ AH bit 7 clear if successful
+--------S-14FFFF-----------------------------
+INT 14 - COMM-DRV v14.0 - GET INT 14 INFORMATION AREA
+ AX = FFFFh
+ BX:SI -> DWORD buffer for address of information area (see #00404)
+ (initialized to zeros)
+Return: BX:SI buffer filled with nonzero value if installed
+Program: COMM-DRV is a universal serial communications driver by Willies'
+ Computer Software Company, which supports standard INT 14 and
+ FOSSIL calls as well as its own interfaces
+Index: installation check;COMM-DRV
+
+Format of COMM-DRV information area:
+Offset Size Description (Table 00404)
+ 00h 8 BYTEs signature "COMM-DRV"
+ 08h 2 BYTEs 00h,00h
+ 0Ah DWORD -> direct address mapping table
+ 0Eh DWORD previous INT 14 vector
+--------t-15---------------------------------
+INT 15 - Microsoft TSR Specification
+ No additional information available at this time.
+--------B-1500-------------------------------
+INT 15 - CASSETTE - TURN ON TAPE DRIVE'S MOTOR (PC and PCjr only)
+ AH = 00h
+Return: CF set on error
+ AH = 86h no cassette present
+ CF clear if successful
+SeeAlso: AH=01h"CASSETTE",MEM 0040h:0067h"PC"
+--------M-1500-------------------------------
+INT 15 - Amstrad PC1512 - GET AND RESET MOUSE COUNTS
+ AH = 00h
+Return: CX = signed X count
+ DX = signed Y count
+--------O-1500-------------------------------
+INT 15 - VMiX v2+ - INSTALLATION CHECK
+ AH = 00h
+Return: DX = 0798h if installed
+ AX = version (AH = major, AL = minor)
+--------T-1500-------------------------------
+INT 15 - MultiDOS Plus - GIVE UP TIME SLICE
+ AH = 00h
+Return: nothing
+Note: if issued by the highest-priority task while MultiDOS is using
+ priority-based rather than round-robin scheduling, control will be
+ returned to the caller immediately
+SeeAlso: AH=03h"MultiDOS",AX=1000h
+--------B-1501-------------------------------
+INT 15 - CASSETTE - TURN OFF TAPE DRIVE'S MOTOR (PC and PCjr only)
+ AH = 01h
+Return: CF set on error
+ AH = 86h no cassette present
+ CF clear if successful
+SeeAlso: AH=00h"CASSETTE"
+--------b-1501-------------------------------
+INT 15 - Amstrad PC1512 - WRITE DATA TO NON-VOLATILE RAM
+ AH = 01h
+ AL = NVRAM location (00h to 3Fh) (see #00405)
+ BL = NVRAM data value
+Return: AH = return code
+ 00h OK
+ 01h address bad
+ 02h write error
+SeeAlso: AH=02h"Amstrad"
+
+Format of Amstrad NVRAM:
+Offset Size Description (Table 00405)
+ 00h BYTE time of day: seconds
+ 01h BYTE alarm time: seconds
+ 02h BYTE time of day: minutes
+ 03h BYTE alarm time: minutes
+ 04h BYTE time of day: hours
+ 05h BYTE alarm time: hours
+ 06h BYTE day of week, 1 = Sunday
+ 07h BYTE day of month
+ 08h BYTE month
+ 09h BYTE year mod 100
+ 0Ah BYTE RTC status register A (see #00406)
+ 0Bh BYTE RTC status register B (see #00407)
+ 0Ch BYTE RTC status register C (read-only) (see #00408)
+ 0Dh BYTE RTC status register D
+ bit 7: battery good
+ 0Eh 6 BYTEs time and date machine last used
+ 14h BYTE user RAM checksum
+ 15h WORD Enter key scancode/ASCII code
+ 17h WORD Forward delete key scancode/ASCII code
+ 19h WORD Joystick fire button 1 scancode/ASCII code
+ 1Bh WORD Joystick fire button 2 scancode/ASCII code
+ 1Dh WORD mouse button 1 scancode/ASCII code
+ 1Fh WORD mouse button 2 scancode/ASCII code
+ 21h BYTE mouse X scaling factor
+ 22h BYTE mouse Y scaling factor
+ 23h BYTE initial VDU mode and drive count
+ 24h BYTE initial VDU character attribute
+ 25h BYTE size of RAM disk in 2K blocks
+ 26h BYTE initial system UART setup byte
+ 27h BYTE initial external UART setup byte
+ 28h 24 BYTEs available for user application
+Note: bytes 00h-0Dh are the same on the IBM AT as they are used/updated by
+ the clock chip
+
+Bitfields for RTC status register A:
+Bit(s) Description (Table 00406)
+ 7 set if date/time being updated
+ 6-4 time base speed, default 010 = 32768 Hz
+ 3-0 interrupt rate selection, default 0110 = 1024 Hz
+SeeAlso: #00405
+
+Bitfields for RTC status register B:
+Bit(s) Description (Table 00407)
+ 7 clear if normal update, set if abort update
+ 6 periodic interrupt enable
+ 5 alarm interrupt enable
+ 4 update end interrupt enable
+ 3 square wave enable
+ 2 date mode (clear = BCD, set = binary)
+ 1 24-hour format
+ 0 daylight saving time enable
+SeeAlso: #00405
+
+Bitfields for RTC status register C:
+Bit(s) Description (Table 00408)
+ 7 IRQF flag
+ 6 PF flag
+ 5 AF flag
+ 4 UF flag
+SeeAlso: #00405
+--------O-1501-------------------------------
+INT 15 - VMiX - "sys_chanreq" - I/O CHANNEL OBJECT MANAGER
+ AH = 01h
+ STACK: WORD object ID of requestor
+ DWORD pointer to ASCIZ name of requested method
+ "assign" assign channel to object
+ "deassign" deassign channel
+ "cursor" set cursor on/off
+ "init" initialize comm port
+ "open" open I/O channel
+ "position" set cursor position
+ "receive" get buffered packet from comm port
+ "send" send buffered packet to comm port
+ "vio" set current virtual I/O to specified channel
+ "window" make window at cursor position
+ ---if "assign"---
+ WORD object UID
+ WORD caller UID/PID
+ DWORD CSL with port
+ ---if "deassign"---
+ WORD channel ID
+ ---if "cursor"---
+ WORD channel ID (must be a SRCSINK)
+ WORD new state (0000h off, 0001h on)
+ ---if "init"---
+ WORD channel ID (must be a SRCSINK)
+ WORD comm port number (00h-03h)
+ WORD UART init code
+ ---if "open"---
+ WORD channel ID
+ ---if "position"---
+ WORD channel ID (must be a SRCSINK)
+ WORD position (high byte = row, low byte = column)
+ ---if "receive"---
+ DWORD pointer to buffer
+ ---if "send"---
+ WORD length of buffer
+ DWORD pointer to buffer
+ ---if "vio"---
+ WORD channel ID (must be a SRCSINK)
+ ---if "window"---
+ WORD top left (high byte = row, low byte = column)
+ WORD bottom right (high byte = row, low byte = column)
+Return: DX:AX -> IRP structure or 0000h:0000h
+SeeAlso: AH=00h"VMiX",AH=02h"VMiX"
+--------T-1501-------------------------------
+INT 15 - MultiDOS Plus - REQUEST RESOURCE SEMAPHORE
+ AH = 01h
+ AL = semaphore number (00h-3Fh)
+Return: AH = status
+ 00h successful
+ 02h invalid semaphore number
+Notes: if the semaphore is not owned, ownership is assigned to the calling
+ task and the call returns immediately
+ if the semaphore is already owned by another task, the calling task
+ is placed on a queue for the semaphore and suspended until it can
+ become owner of the semaphore
+ semaphore 0 is used internally by MultiDOS to synchronize DOS access
+SeeAlso: AH=02h"MultiDOS",AH=10h"MultiDOS",AH=1Bh"MultiDOS"
+--------B-1502-------------------------------
+INT 15 - CASSETTE - READ DATA (PC and PCjr only)
+ AH = 02h
+ CX = number of bytes to read
+ ES:BX -> buffer
+Return: CF clear if successful
+ DX = number of bytes read
+ ES:BX -> byte following last byte read
+ CF set on error
+ AH = status (see #00409)
+SeeAlso: AH=00h"CASSETTE",AH=03h"CASSETTE",MEM 0040h:0069h,MEM 0040h:006Bh"PC"
+
+(Table 00409)
+Values for Cassette status:
+ 00h successful
+ 01h CRC error
+ 02h bad tape signals
+ 04h no data
+ 80h invalid command
+ 86h no cassette present
+--------b-1502-------------------------------
+INT 15 - Amstrad PC1512 - READ DATA FROM NON-VOLATILE RAM
+ AH = 02h
+ AL = NVRAM location (00h to 3Fh)
+Return: AH = return code
+ 00h OK
+ 01h address bad
+ 02h checksum error
+ AL = NVRAM data value
+SeeAlso: AH=01h"Amstrad"
+--------O-1502-------------------------------
+INT 15 - VMiX - "sys_memreq" - MEMORY OBJECT MANAGER
+ AH = 02h
+ STACK: WORD object ID of requestor
+ DWORD pointer to ASCIZ name of requested method
+ "assign" allocate low memory block
+ "assign extended" allocate extended memory pages
+ "assign gdt" allocate GDT selector
+ "paged" allocate low paged memory
+ "paged extended" alllocate extended memory pages
+ "deassign" free memory block
+ "deassign gdt" free GDT selector
+ "getvpage" get physical address for virtual page
+ "setvpage" set physical address for virtual page
+ "info" get VMiX memory usage info block
+ "move" move contents of 32-bit memory
+ "newmcb" make new DOS memory control block
+ "owner" get process ID of MCB or PSP owner
+ "umb" allocate upper memory block
+ "video" toggle system use of video memory and get stat
+ ---if "assign"---
+ WORD number of objects
+ WORD size in bytes (multiple of 512 bytes)
+ ---if "assign extended"---
+ WORD number of objects
+ WORD size in bytes (multiple of 4K)
+ ---if "assign gdt"---
+ WORD access type (low byte)
+ WORD segment size in paragraphs
+ DWORD pointer to start of physical segment
+ ---if "paged"---
+ WORD number of 512-byte pages
+ ---if "paged extended"
+ WORD number of 4K pages
+ ---if "deassign"---
+ DWORD pointer returned by previous allocation call
+ ---if "deassign gdt"---
+ WORD GDT selector
+ ---if "getvpage"---
+ WORD owner's process ID
+ DWORD pointer to buffer for page structure (struct VPGE)
+ ---if "setvpage"---
+ WORD owner's process ID
+ DWORD pointer to new page structure (struct VPGE)
+ ---if "info"---
+ no additional arguments
+ ---if "move"
+ DWORD 32-bit source address
+ DWORD 32-bit destination address
+ WORD number of words to move
+ ---if "newmcb"---
+ DWORD pointer to new MCB's location
+ WORD size of memory block
+ DWORD pointer to ASCIZ name string (max 8 chars)
+ ---if "owner"---
+ WORD MCB or PSP segment
+ ---if "umb"---
+ WORD size in paragraphs
+ ---if "video"---
+ no additional arguments
+Return: DX:AX -> memory block or VPGE struct or 0000h:0000h
+SeeAlso: AH=00h"VMiX",AH=01h"VMiX"
+--------T-1502-------------------------------
+INT 15 - MultiDOS Plus - RELEASE RESOURCE SEMAPHORE
+ AH = 02h
+ AL = semaphore number (00h-3Fh)
+Return: AH = status
+ 00h successful
+ 01h not semaphore owner
+ 02h invalid semaphore number
+Notes: if any tasks are waiting for the semaphore, the first task on the wait
+ queue will become the new owner and be reawakened
+ do not use within an interrupt handler
+SeeAlso: AH=01h"MultiDOS",AH=10h"MultiDOS",AH=1Ch"MultiDOS"
+--------B-1503-------------------------------
+INT 15 - CASSETTE - WRITE DATA (PC and PCjr only)
+ AH = 03h
+ CX = number of bytes to write
+ ES:BX -> data buffer
+Return: CF clear if successful
+ ES:BX -> byte following last byte written
+ CF set on error
+ AH = status (see #00409)
+ CX = 0000h
+SeeAlso: AH=00h"CASSETTE",AH=02h"CASSETTE"
+--------V-1503-------------------------------
+INT 15 - Amstrad PC1512 - WRITE VDU COLOR PLANE WRITE REGISTER
+ AH = 03h
+ AL = value (I,R,G,B bits)
+Return: nothing
+SeeAlso: AH=04h"Amstrad"
+--------O-1503-------------------------------
+INT 15 - VMiX - "sys_pinput" - PROMPTED CONSOLE INPUT
+ AH = 03h
+ STACK: DWORD pointer to ASCII prompt
+ WORD field outline character
+ WORD length of input field (max 7Fh)
+ DWORD address of pointer to input buffer
+Return: AX = length of input (input buffer is padded with blanks)
+SeeAlso: AH=04h"VMiX"
+--------T-1503-------------------------------
+INT 15 - MultiDOS Plus - SUSPEND TASK FOR INTERVAL
+ AH = 03h
+ DX = number of time slices to remain suspended
+Return: after specified interval has elapsed
+Note: when priority-based scheduling is in use, high-priority tasks should
+ use this function to yield the processor
+SeeAlso: AH=00h"MultiDOS",AH=0Ah"MultiDOS"
+--------B-1504-------------------------------
+INT 15 - SYSTEM - BUILD ABIOS SYSTEM PARAMETER TABLE (PS)
+ AH = 04h
+ ES:DI -> 32-byte results buffer for System Parameter Table (see #00410)
+ DS = segment containing ABIOS RAM extensions (zero if none)
+Return: CF clear if successful
+ AH = 00h success
+ ES:DI buffer filled
+ AL destroyed
+ CF set on failure
+ AX destroyed
+ AH = 80h/86h if not supported
+SeeAlso: AH=05h"ABIOS",AH=C1h
+
+Format of ABIOS System Parameter Table:
+Offset Size Description (Table 00410)
+ 00h DWORD FAR address of ABIOS Common Start Routine
+ 04h DWORD FAR address of ABIOS Interrupt Routine
+ 08h DWORD FAR address of ABIOS Time-out Routine
+ 0Ch WORD number of bytes of stack required by this ABIOS implementation
+ 0Eh 16 BYTEs reserved
+ 1Eh WORD number of entries in initialization table
+--------V-1504-------------------------------
+INT 15 - Amstrad PC1512 - WRITE VDU COLOR PLANE READ REGISTER
+ AH = 04h
+ AL = value (RDSEL1 and RDSEL0)
+Return: nothing
+SeeAlso: AH=03h"Amstrad",AH=05h"Amstrad"
+--------O-1504-------------------------------
+INT 15 - VMiX - "sys_vprintf" - FORMATTED OUTPUT TO STREAM
+ AH = 04h
+ STACK: DWORD control string
+ DWORD array of arguments
+Return: nothing
+SeeAlso: AH=03h"VMiX"
+--------T-1504-------------------------------
+INT 15 - MultiDOS Plus - SEND MESSAGE TO ANOTHER TASK
+ AH = 04h
+ AL = mailbox number (00h-3Fh)
+ CX = message length in bytes
+ DS:SI -> message
+Return: AH = status
+ 00h successful
+ 01h out of message memory
+ 02h invalid mailbox number
+Note: the message is copied into a system buffer; the caller may immediately
+ reuse its buffer
+SeeAlso: AH=05h"MultiDOS"
+--------B-1505-------------------------------
+INT 15 - SYSTEM - BUILD ABIOS INITIALIZATION TABLE (PS)
+ AH = 05h
+ ES:DI -> results buffer of length 18h * Number_of_Entries (see #00411)
+ DS = segment containing ABIOS RAM extensions (zero if none)
+Return: CF clear if successful
+ AH = 00h success
+ ES:DI buffer filled
+ AL destroyed
+ CF set on failure
+ AX destroyed
+ AH = 80h/86h if not supported
+SeeAlso: AH=04h"ABIOS",AH=C1h
+
+Format of one entry of ABIOS Initialization Table:
+Offset Size Description (Table 00411)
+ 00h WORD device ID (see #00412)
+ 02h WORD number of Logical IDs
+ 04h WORD Device Block length (zero for ABIOS patch or extension)
+ 06h DWORD -> init routine for Device Block and Function Transfer Table
+ 0Ah WORD request block length
+ 0Ch WORD Function Transfer Table length (zero for a patch)
+ 0Eh WORD Data Pointers length (in Common Data Area)
+ 10h BYTE secondary device ID (hardware level this ABIOS ver supports)
+ 11h BYTE revision (device driver revision level this ABIOS supports)
+ 12h 6 BYTEs reserved
+
+(Table 00412)
+Values for ABIOS device ID:
+ 00h ABIOS internal calls
+ 01h floppy disk
+ 02h hard disk
+ 03h video
+ 04h keyboard
+ 05h parallel port
+ 06h serial port
+ 07h system timer
+ 08h real-time clock
+ 09h system services
+ 0Ah NMI
+ 0Bh mouse
+ 0Eh CMOS RAM
+ 0Fh DMA
+ 10h Programmable Option Select (POS)
+ 16h keyboard password
+--------V-1505-------------------------------
+INT 15 - Amstrad PC1512 - WRITE VDU GRAPHICS BORDER REGISTER
+ AH = 05h
+ AL = value (I,R,G,B bits)
+Return: nothing
+SeeAlso: AH=04h"Amstrad"
+--------O-1505-------------------------------
+INT 15 - VMiX - "sys_getpid" - GET PROCESS ID OF CURRENT PROCESS
+ AH = 05h
+Return: AX = process ID
+SeeAlso: AH=06h"VMiX",AH=0Bh"VMiX"
+--------T-1505-------------------------------
+INT 15 - MultiDOS Plus - CHECK MAILBOX
+ AH = 05h
+ AL = mailbox number (00h-3Fh)
+Return: AH = status
+ 00h successful
+ DX = length of first message in queue, 0000h if no message
+ 02h invalid mailbox number
+SeeAlso: AH=04h"MultiDOS",AH=06h"MultiDOS"
+--------b-1506-------------------------------
+INT 15 - Amstrad PC1512 - GET ROS VERSION NUMBER
+ AH = 06h
+Return: BX = version number
+--------O-1506-------------------------------
+INT 15 - VMiX - "sys_getpcb" - GET POINTER TO PROCESS CONTROL BLOCK
+ AH = 06h
+ STACK: WORD process ID
+Return: DX:AX -> process control block
+SeeAlso: AH=05h"VMiX",AH=07h"VMiX",AH=08h"VMiX"
+--------T-1506-------------------------------
+INT 15 - MultiDOS Plus - READ MAILBOX
+ AH = 06h
+ AL = mailbox number (00h-3Fh)
+ CX = size of buffer in bytes
+ ES:DI -> buffer for message
+Return: AH = status
+ 00h successful
+ CX = number of bytes copied
+ DX = actual length of message
+ 02h invalid mailbox number
+Note: if the caller's buffer is not large enough, the message is truncated
+ and the remainder is lost
+SeeAlso: AH=04h"MultiDOS",AH=05h"MultiDOS"
+--------O-1507-------------------------------
+INT 15 - VMiX - "sys_getocb" - GET POINTER TO OBJECT CONTROL BLOCK
+ AH = 07h
+ STACK: WORD object type
+Return: DX:AX -> object control block
+SeeAlso: AH=06h"VMiX",AH=08h"VMiX"
+----------1507-------------------------------
+INT 15 - IBM SurePath BIOS - Officially "Private" Function
+ AH = 07h
+SeeAlso: AH=08h"IBM"
+--------T-1507-------------------------------
+INT 15 - MultiDOS Plus - SPAWN INTERNAL TASK (CREATE NEW THREAD)
+ AH = 07h
+ BX:CX = entry point of new task
+ DX = stack size in paragraphs
+Return: AH = status
+ 00h successful
+ 01h no free task control blocks
+ 02h no free memory for task's stack
+Note: execution returns immediately to calling task
+SeeAlso: AH=08h"MultiDOS",AH=09h"MultiDOS",AH=13h"MultiDOS"
+--------O-1508-------------------------------
+INT 15 - VMiX - "sys_getccb" - GET CHANNEL CONTROL BLOCK
+ AH = 08h
+ STACK: WORD channel ID
+Return: DX:AX -> channel control block
+SeeAlso: AH=06h"VMiX",AH=07h"VMiX"
+--------B-1508-------------------------------
+INT 15 - IBM SurePath BIOS - WAIT REQUESTED TIME PERIOD
+ AH = 08h
+ AL = function
+ 00h wait in increments of 15.025 microseconds
+ CX = number of time increments to wait (0000h = maximum)
+ 80h wait in increments of 840 ns
+ ECX = number of time increments to wait
+ 81h I/O event wait
+ BH = bitmask of bits to check
+ BL = expected pattern
+ DX = I/O port address
+ ECX = number of 840 ns microticks to wait
+ Return: ECX = 00000000h if expected pattern did not occur
+ 82h memory event wait
+ BH = bitmask of bits to check
+ BL = expected pattern
+ ES:SI -> BYTE to check
+ ECX = number of 840 ns microticks to wait
+ Return: ECX = 00000000h if expected pattern did not occur
+ other reserved
+Return: CF clear if successful
+ CF set on error
+ AH = status
+ 00h successful
+ 01h used 15.025 microsecond interval, time rounded up
+ 08h reserved subfunction
+ 86h function not supported
+Notes: IBM classifies this function as optional
+ if the POST determines that the timer is nonfunctional, this function
+ uses the 15.025 microsecond refresh timer instead of the
+ full-resolution timer
+SeeAlso: AH=07h"IBM",AH=09h"IBM",AH=86h
+--------T-1508-------------------------------
+INT 15 - MultiDOS Plus - TERMINATE INTERNAL TASK (KILL THREAD)
+ AH = 08h
+Return: calling task terminated, so execution never returns to caller
+Notes: an internal task must be terminated with this function rather than a
+ DOS termination function
+ task's stack space is returned to parent task's memory pool
+SeeAlso: AH=07h"MultiDOS"
+--------O-1509-------------------------------
+INT 15 - VMiX - "sys_getqueue" - GET ID OF QUEUED ELEMENT
+ AH = 09h
+ STACK: WORD queue ID (0 = process queue, 1 = object, 3 = type)
+ WORD subqueue ID
+Return: AX = queue ID
+SeeAlso: AH=0Ah"VMiX"
+----------1509-------------------------------
+INT 15 - IBM BIOS - RESERVED FOR PCMCIA SYSTEM RESOURCE TABLE ACCESS
+ AH = 09h
+ no further details available
+SeeAlso: AH=08h"IBM"
+--------T-1509-------------------------------
+INT 15 - MultiDOS Plus - CHANGE TASK'S PRIORITY
+ AH = 09h
+ AL = new priority
+Return: nothing
+Note: the priority has different meanings depending on whether priority-
+ based or round-robin scheduling is used
+SeeAlso: AH=07h"MultiDOS"
+--------O-150A-------------------------------
+INT 15 - VMiX - "sys_qetqnext" - GET ID OF NEXT QUEUED ELEMENT
+ AH = 0Ah
+ STACK: WORD queue ID (0 = process queue, 1 = object, 3 = type)
+ WORD ID of current element in queue chain
+Return: AX = ID of next element
+SeeAlso: AH=09h"VMiX",AH=0Fh"VMiX"
+--------T-150A-------------------------------
+INT 15 - MultiDOS Plus - CHANGE TIME SLICE INTERVAL
+ AH = 0Ah
+ AL = new interval
+ 00h = 55.0 ms (default)
+ 80h = 27.5 ms
+ 40h = 13.75 ms
+ 20h = 6.88 ms
+ 10h = 3.44 ms
+ 08h = 1.72 ms
+SeeAlso: AH=03h"MultiDOS"
+--------O-150B-------------------------------
+INT 15 - VMiX - "sys_sysreq" - SYSTEM CONFIGURATION MANAGER
+ AH = 0Bh
+ STACK: WORD caller's UID
+ DWORD pointer to ASCIZ name of requested method
+ "abort" abort current send/receive on comm port
+ "block" start/end critical section
+ "close" terminate interrupt-drive comm I/O
+ "open" prepare comm port for interrupt-driven I/O
+ "delay" set delay timer and wait
+ "hibernate" put process to sleep
+ "ints" enable/disable interrupt-driven INT 14h
+ "length" get current send/receive buffer offsets
+ "kswitch" switch stacks
+ "numproc" get number of active processes
+ "protocol" set protocol function for comm interrupts
+ "relocate" set/reset VMiX flag for relocating to himem
+ "status" get current open comm port status
+ "wake" awaken a process
+ "xport" get comm port polled for logins
+ ---if "abort"---
+ no additional arguments
+ ---if "block"---
+ WORD 0000h end, 0001h start
+ ---if "close"---
+ no additional arguments
+ ---if "open"---
+ WORD comm port (00h-03h)
+ WORD BIOS parameter byte (see #00300 at INT 14/AH=00h),
+ except bits 7-5: 000 = 19200, 001 = 38400, 011 = 115200
+ ---if "delay"---
+ WORD time in seconds
+ ---if "hibernate"---
+ WORD process ID
+ ---if "ints"---
+ WORD 0000h if no, 0001h if yes
+ ---if "length","numproc","relocate","status","xport"---
+ no additional arguments
+ ---if "kswitch"---
+ DWORD pointer to new stack
+ ---if "protocol"---
+ DWORD pointer to function (must be in low "assign"ed memory
+ when in 386 mode)
+ ---if "wake"---
+ WORD process ID
+Return: DX:AX -> result or 0000h:0000h
+ ---if "length"---
+ BYTE receive offset
+ BYTE send offset
+ ---if "kswitch"---
+ DWORD old stack pointer
+ ---if "numproc"---
+ WORD number of active processes
+ ---if "status"---
+ current open comm port status
+ ---if "xport"---
+ current comm port being polled for logins
+Note: the "delay" command reportedly disables the keyboard until the delay
+ completes
+SeeAlso: AH=05h"VMiX",AH=0Eh"VMiX"
+--------T-150B-------------------------------
+INT 15 - MultiDOS Plus - FORCE DISPLAY OUTPUT TO PHYSICAL SCREEN MEMORY
+ AH = 0Bh
+Return: nothing
+Notes: sets calling task's screen pointer to actual screen memory; the pointer
+ may be restored with AH=0Ch
+ caller's video mode must be same as foreground task's video mode
+ any text written while in the background will be saved to the
+ foreground task's virtual screen when it switches to the background
+ useful if a background task wants to display a message on the
+ foreground screen
+SeeAlso: AH=0Ch"MultiDOS"
+--------O-150C-------------------------------
+INT 15 - VMiX - "sys_getstack" - GET POINTER TO PROCESS TSS STACK
+ AH = 0Ch
+ STACK: WORD process ID
+Return: DX:AX -> TSS stack store
+SeeAlso: AH=00h"VMiX"
+--------T-150C-------------------------------
+INT 15 - MultiDOS Plus - RESTORE OLD VIDEO DISPLAY MEMORY
+ AH = 0Ch
+Return: nothing
+Note: restores task's screen pointer saved by AH=0Bh; must not be called
+ unless AH=0Bh has been called first
+SeeAlso: AH=0Bh"MultiDOS"
+--------O-150D-------------------------------
+INT 15 - VMiX - "sys_spawn" - START A CHILD PROCESS JOB SHELL
+ AH = 0Dh
+ STACK: DWORD ASCIZ string starting with requested I/O channel and
+ followed by standard VMiX shell command string
+Return: AX = process ID or error code "SYS_ERROR"
+Note: the maximum string length is 7Fh characters
+SeeAlso: AH=0Eh"VMIX",AH=11h"VMiX",INT 21/AH=4Bh
+--------T-150D-------------------------------
+INT 15 - MultiDOS Plus - DISABLE MULTITASKING
+ AH = 0Dh
+Return: nothing
+Note: calling task receives all time slices until AH=0Eh is called; this
+ allows time-critical events or nonreentrant code to be processed
+SeeAlso: AH=0Eh"MultiDOS",AH=10h"MultiDOS",AX=101Bh,AH=20h"MultiDOS"
+--------O-150E-------------------------------
+INT 15 - VMiX - "sys_kill" - HARD TERMINATE PROCESS
+ AH = 0Eh
+ STACK: WORD process ID
+Return: AX = status (SYS_OK or SYS_ERROR)
+SeeAlso: AH=0Bh"VMiX",AH=0Dh"VMIX"
+--------T-150E-------------------------------
+INT 15 - MultiDOS Plus - ENABLE MULTITASKING
+ AH = 0Eh
+Return: nothing
+SeeAlso: AH=0Dh"MultiDOS",AX=101Ch,AH=20h"MultiDOS"
+--------d-150F-------------------------------
+INT 15 C - SYSTEM - FORMAT UNIT PERIODIC INTERRUPT (PS ESDI drives only)
+ AH = 0Fh
+ AL = phase code
+ 00h reserved
+ 01h surface analysis
+ 02h formatting
+Return: CF clear if formatting should continue
+ CF set if formatting should terminate
+Note: called during ESDI drive formatting after each cylinder is completed
+SeeAlso: INT 13/AH=1Ah
+--------O-150F-------------------------------
+INT 15 - VMiX - "sys_getqkey" - GET KEY FIELD OF QUEUED ELEMENT
+ AH = 0Fh
+ STACK: WORD queue ID (0 = process queue, 1 = object q, 3 = type q)
+ WORD ID of element in queue chain
+Return: AX = key
+SeeAlso: AH=0Ah"VMiX"
+--------T-150F-------------------------------
+INT 15 - MultiDOS Plus - EXECUTE A MULTIDOS PLUS COMMAND
+ AH = 0Fh
+ DS:BX -> ASCIZ command
+Return: after command has been processed
+Notes: specified string is executed as if it had been typed at the MultiDOS
+ command prompt
+ the task is placed on a queue which MultiDOS examines periodically and
+ is suspended until MultiDOS has processed the command
+ all lowercase characters up to the first blank are converted to upper
+ case within the given buffer
+--------!---Section--------------------------
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